Perhaps you should try some spelling variations:
s.asi_ research » basic research
central s.asi_ » central asia, central s.a
research team » research areas, research a
tax research » a research, bank research, _ research
firm surveys » firm survey
central tax » central taxes, central bank

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

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