query with AND and OR not retrieving correct results
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                 Key: LUCENE-1170
                 URL: https://issues.apache.org/jira/browse/LUCENE-1170
             Project: Lucene - Java
          Issue Type: Bug
          Components: QueryParser
    Affects Versions: 2.3
         Environment: linux and windows
            Reporter: Graham Maloon


I was working with Lucene 1.4, and have now upgraded to 2.3.0 but there is 
still a problem that I am experiencing with the Queryparser
 
I am passing the following queries:
 
"big brother" - works fine
"big brother" AND dubai - works fine
"big brother" AND football - works fine
"big brother" AND dubai OR football - returns extra documents which contain 
"big brother" but do not contain either dubai or football.
"big brother" AND (dubai OR football) gives the same as the one above  
 
Am I doing something wrong?


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