Perhaps you should try some spelling variations:
proof presentation » proper presentation, brief presentation, product presentation
selected diseases » neglected diseases, related diseases, neglected disease
2f prevention » f prevention, 2f prediction, proof prevention
26 control » 6 control, 16 control, 12.6 control

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: %selected diseases %((2f prevention) OR (proof presentation)) %26 control%22.
• Adding a wildcard symbol may retrieve word variants: %selected diseases %((2f prevention) or (proof presentation)) %26 control%22*.