c# - dynamic number of where clause conditions in linq to sql -

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I am trying to find the data table for all the entries that have a list of words. There may be a variable number of words in the list. Here's my code: 

  string [] word = initial string (''); Foreign currency (word of the word string) {list & lt; Mrconso_SnoMed2014 & gt; Curmatches = (One of Master DB for MrConso_SnoMed2014, where a.STR.ToLower () contains it (word toLower (). Trim ()) Select one) .list (); Matches.AddRange (curMatches); }

This code is taking too long to execute. All database calls are taking time. I would like to use some dynamic query that has a variable number where the section is something like this: 

  list & lt; Mrconso_SnoMed2014 & gt; Curmentches = (One of Master DB in Mrconso_noMed2014 where a.STR.ToLower () contains it (word [0] .over (). Trim ()) or a.STR.ToLower (). In it (the word [1]. (.) Trim ()) ... Select a) .Olist (); You can use the interface from LINQ, something looks like:     
 
  list1 Select (s = & gt; s.STR.ToLower). Exclude (list2.Select (s = & gt; s.ToLower). Trim ()))

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