Most of us don't,how the Goolge Search Engine takes-in when we search something... Here are a few samples...
Google Search Keyword Format ---> Google Search Engine takes it this way
1)
intel release ----- The words "intel" and "release"
2)
sailing OR boating ----- Either the word sailing or the word boating
3)
"love me tender" ----- The exact phrase love me tender
4)
printer -cartridge ----- The word printer but NOT the word cartridge
5)
Toy Story +2 ----- Movie title including the number 2
6)
~auto looks up ----- The word auto and synonyms
7)
define:serendipity ----- Definitions of the word serendipity
8)
how now * cow ----- The words how now cow separated by one or more words
9)
+ addition; ----- 978+456
10)
- subtraction; ----- 978-456
11)
* multiplication; ----- 978*456
12)
/ division; ----- 978/456
13)
% of percentage; ----- 50% of 100
14)
^ raise to a power; ----- 4^18 (4 to the eighteenth power)
15)
old in new (conversion) ----- 45 celsius in Fahrenheit
16)
site:(search only one website) ----- site:websearch.about.com “invisible web”
17)
link:(find linked pages) ----- link:www.lifehacker.com
18)
#...#(search within a number range) ----- nokia phone $200...$300
19)
daterange:(search within specific date range) ----- bosnia daterange:200508-200510
20)
safesearch: (exclude adult content) ----- safesearch:breast cancer
21)
info: (find info about a page) ----- info:www.websearch.about.com
22)
related: (related pages) ----- related:www.websearch.about.com
23)
cache: (view cached page) ----- cache:google.com
24)
filetype:(restrict search to specific filetype)----- zoology filetype:ppt
25)
allintitle: (search for keywords in page title) ----- allintitle:"nike" running
26)
inurl:(restrict search to page URLs) ----- inurl:chewbacca
27)
site:.edu (specific domain search) ----- site:.edu, site:.gov, site:.org, etc.
28)
site:country code (restrict search to country) ----- site:.br “rio de Janeiro”
29)
intext:(search for keyword in body text) ----- intext:parlor
30)
allintext: (return pages with all words specified in body text) ----- allintext:north pole
31)
book(search book text) ----- book The Lord of the Rings
32)
phonebook:(find a phone number) ----- phonebook:Google CA
33)
bphonebook: (find business phone numbers) ----- bphonebook:Intel OR
34)
rphonebook:(find residential phone numbers) ----- rphonebook:Joe Smith Seattle WA
35)
movie:(search for showtimes) ----- movie:wallace and gromit 97110
36)
stocks:(get a stock quote) ----- stocks:ncesa
37)
weather:(get local weather) ----- weather:97132
Hope this will be useful !