Perhaps you should try some spelling variations:
2000 terminology » 2 terminology, 2.2 terminology, 2.1 terminology
2f terminology » 2 terminology, 24 terminology, 26 terminology
20 terminology » 2 terminology, 10 terminology, 2.2 terminology

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: %22mathematics %((2f terminology) OR (((20 terminology) OR (2000 terminology))))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22mathematics %((2f terminology) or (((20 terminology) OR (2000 terminology))))%22".
• Adding a wildcard symbol may retrieve word variants: %22mathematics %((2f terminology) or (((20 terminology) OR (2000 terminology))))%22*.