Search result issue with Search API module I'm working with Drupal-7; where i have installed so many different modules in it. one of them modules is "Search API". 

The problem what i'm facing is Result of searched keyword. whenever i use to search for a particular keyword it working for the Exact match with that key word.

For example :  keyword = "Drupal" ; 
then result only retrieved if this exact word will match with the content of database. but i would like to get result which are having any of these characters.

For example : keyword = "Dru" ; 
then also all the result will retrieved which is having only word "Dru" as well as "Drupal"  &amp; etc..

In short now Query is working with "=" operator but i would like to make it with "LIKE" operator.

What should i do in which page to get resolve this..?

I have tried to many things but not get success.
If you are not using Apache Solr in the back-end, then you will have to use the Fuzzy Search module in conjunction with the Search API module. This module provides drupal sites with a fuzzy search engine to allow for broader keyword matches including partial or misspelled keywords.

*Note: At time of writing this there is some incompatibility with Search API 7.x-1.0-rc1 and Fuzzy Search 7.x-1.x-dev (2011-May-12). To get these two working together, you will need to use the search_api 7.x-1.0-beta10 until the Fuzzy Search maintainer gets the module caught up to the current release of Search API.