Perhaps you should try some spelling variations:
disease performance » disease performing, delle performance, state performance
performance review » performance risk, performance evidence
improving disease » improving fiscal, improving dietary, improving image
hull performance » sulle performance, hpl performance, pupil performance
improving hull » improving fuel, improving human, improving child

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( improving hull performance review. ) or ( improving disease performance review. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( improving hull performance review. ) OR ( improving disease performance review. )).
• Adding a wildcard symbol may retrieve word variants: (( improving hull performance review. ) or ( improving disease performance review. ))*.