Perhaps you should try some spelling variations:
research forest » research format, research digest, research focus
central cgiar » central asia, central asian, central city
forest survey » first survey, harvest survey, force survey
areas series » areas services, ideas series, seas series
a research » 2 research
central a » central la, central _, 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 cgiar research areas series. ) or ( central a research forest survey. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( central cgiar research areas series. ) OR ( central a research forest survey. )).
• Adding a wildcard symbol may retrieve word variants: (( central cgiar research areas series. ) or ( central a research forest survey. ))*.