How to build query: Should have those values and must have something else?

Hello,
it is easy to create a boolean should query. But my problem is that I need documents which contains those terms I've specified in the query and must contain something else.
For example a document has a field "test":"a1 a2", and another document has "test":"a1 a2 a3".
When I run my should query with terms "a1" and "a2" I'm getting both documents, which is expected. But I need to omit somehow the documents which contains only those terms (the first one in this example). And I need only the documents which contain more than those provided terms.
Is it possible?
Any ideas are appreciated.

Thank you,
Eugene

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.