while searching something in non english language in my application its not properly working

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ASP.NET4

In my asp.net application i have one search box to search posts from entire database. its working fine but when i search something in non-english word it gives me correct result along with all non english posts. How to avoid unwanted results? i m not storing the value of search in database when some user types in search box that value goes in procedure and compare matching results from table and gives results. please help me


thanks in advance....