In this post I would like to share tips and tricks on Google search techniques. I believe that web search is best understood by examples. This manuscript contains mainly examples of search expressions and very few explanatory words. First it may be helptul to get an idea about how search works? The following short movie (3.14 min) by Google engineer Matt Cutts give a general good explanation about how search works...

Search engines keep changing their algorithm(s) and adding/removing features. Tools like Google advanced search may narrow your search and give you more relevant results. Nevertheless, Google offers more advanced search features based on keywords and punctuations. They can be used in countless ways and combinations to provide relevant results.
Web search is a general purpose search engine service it can be used to find web pages of
all extensions and types.
There are more specialized search services such as
Google images search service
or Google videos search service
or Google shopping (narrow search to products) and more.

- (sin(30 degrees))^2+e^2+pi returns 10.7806487525.
- 22.4%7 returns 22.3
**modulo**7 - sin(x) returns the
**graph**of sin(x). - (sin(x))^2+(cos(x))^3 returns the
**graph**of the function $f(x)=\sin^2(x)+\cos^3(x)$.

- 2 usd in euro
- 2 meter in feet
- 290 pounds in kg
- 20 litres in gallons
- 22.3% * 19,321 returns 22.3 percent out of 19,321.
- 22.3% * $19,321 returns 22.3 percent out of 19,321 USD.
- 22.3% * 19,321 pound returns 22.3 percent out of 19,321 Pounds.
- second in year returns 22.3 percent out of 19,321
- hour in 100 year returns 22.3 percent out of 19,321

- hello world c++ does not ignore +

- "Godel incompleteness theorem"
- "the best choice out of 3"
- linux distribution "the best choice out of "
- "linux distribution" "the best choice out of "

Notice that the**and**logic operator separates between the two quoted phrases.

- "Godel * theorem"
- The query "dark * moon" may return results with the phrase
- The query "car * accessories"

- Vietnam -war
- blender -software -cloud -tutorial -foundation
- state department -site:.gov
- Paris -hilton
- thought experiment -physics

- star wars helmet $10..$20
- linux laptop $400..$600
- Spain "1890..1948"
- Spain "..1491" search for
**Spain**along with numeric value that is less or equal to 1491. - Spain "1790" search for
**Spain**along with numeric value that is greater or equal to 1790. - area of rectangle l=4 w=2
- area of a circle r=5.2
- area of ellipse a=2 b=3
- pythagorean theorem formula a=3 b=4

- info:google.com
- info:cnn.com
- info:ams.org

- related:cnn.com (without space between the column and the website or page address).
- related:magmath.com/problems/math/textbooks
- related:https://terrytao.wordpress.com/

- link:cnn.com (without space)

- cache:bbc.co.uk Returns Google's snapshot of bbc.co.uk
- cache:http://web.mit.edu/

- stock:pfizer
- stock:yahoo
- stock:google

- weather: jefferson city

- "Riemann hypothesis" site:ams.org limit the search
to
**ams.org** - "Riemann hypothesis" site:.edu limit the search to
site with
**.edu**domain name.

- "2008 crisis" filetype:pdf
- "2008 crisis" filetype:xls
- hello world filetype:cpp
- "recession" filetype:xls site:.ru
- goldbach filetype:pdf ps File type may either be
in
**pdf**format or in**ps**format. - goldbach filetype:tex
- goldbach filetype:tex site:.edu

- define: theorem
- define: "web search"
- define: "cyber warfare"

- construction allinurl:apollonius circle
- allinurl:Riemann hypothesis site:stackexchange.com

- intext:"lucrative market" inurl:"economy"
- intext:"stock target" inurl:"yahoo" -site:finance.yahoo.com
- intext:"lucrative market" inurl:"economy" filetype:pdf
- intext:"analyst opinion" inurl:stock
- intext:"google share" inurl:stock

- intitle:primes
- intitle:"prime number theorem" site:.edu

- allintitle:binary search tree site:.edu
- allintitle:luxury car in usa

<a href="example.com/foo.html">luxury car</a>in some page, then the query allinancor:luxury car may display the page

- allinanchor: "Riemann hypothesis"

- area moon
- area mars
- population usa
- what ip show your ip address
- time California
- area usa
- area usa km2

- author:ben
- author:john

- group: linux system administrator
- group: luxury car
- group: goldbach

- insubject: goldbach
- insubject: world war 2

- robbery location:Chicago

- education source:"chicago tribune"