Perhaps you should try some spelling variations:
research forest » research format, research digest, research focus
forest survey » first survey, harvest survey, force survey
ii research » 3 research, 2 research, 1 research
team series » stem series, nejm series, tilsm series
central ii » central inc, central de, central 1

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( central ii research team series. ) or ( central _ research forest survey. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( central ii research team series. ) OR ( central _ research forest survey. )).
• Adding a wildcard symbol may retrieve word variants: (( central ii research team series. ) or ( central _ research forest survey. ))*.