Perhaps you should try some spelling variations:
22sexually transmitted » sexually transmitted, sexual transmitted, carefully transmitted
2f early » 22 early, 23 early, f early
21 early » 2.1 early, 1 early, 11 early
20 early » 10 early, 1820 early, 1720 early

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: %22sexually transmitted diseases %((((2f early) OR (21 early))) OR (20 early)) works to 1800%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22sexually transmitted diseases %((((2f early) OR (21 early))) or (20 early)) works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %22sexually transmitted diseases %((((2f early) OR (21 early))) or (20 early)) works to 1800%22*.