Tips to search anything more efficient in search engines !

Use Of '+' sign :

This ensures that the results returned to you will definitely consist of the word following the '+' sign. For Eg :
Search: reviews of +iPhone and iPod
This will show results containing the word reviews or iPod but the results will definitely consist of iPhone !

Use Of '-' sign :

Using '-' sign before any word will ensure that the particular word will not be included in the results !

Use Of '~' sign :

Using '~' before any word will return the results also containing the synonyms of the word !

Search a particular site :

To search a particular website you can use the following syntax in the Google search :
Search: site:www.xyz.com abc
For Eg :
Search: site:http://trickscafe.blogspot.com/ Google Search Tips

Define a word :

To get the definition of a word just use :
Search: define:abc
For Eg : Search: define:Computer
This will return you results which define 'Computer'.

Find Pages similar to a page :

To find a page similar i.e. consisting of same type of content, use the following syntax :
Search: related:http://www.xyz.com/

Search for exact phrase :

To search a set of words exactly together i.e.
For Eg :
Search: "contact us"
This will return the results containing both contact and us together !

Using the wild card '*' :

The * sign can be used in places where the whole word is not known.
For Eg:
Search: friend*
This will return the results containing friend , friends , friendship.

Using the '?' sign :

This is used when the full spelling of the word is not known.
For Eg:
Search: fri??d
This will result that in the results in which any alphabet can take the place of '?' sign.

Use of boolean operators :

The Boolean operators like AND,OR,NOT can be used in search box to connect the words !
The search engine understands them as what they mean but the must be in capital letters !
For Eg:
Search: swim OR float
This will return the results containing either swim or float !