Perhaps you should try some spelling variations:
"central tax research project ii." » "central a research project ii.", "central bank research project ii.", "central _ research project ii.", "central taxes research project ii.", "central tax research project aid.", "central tax research project epi.", "central tax research project hci."
"central de research project risk." » "central does research project risk.", "central key research project risk.", "central led research project risk.", "centrale des research project risk.", "central _ research project risk.", "centro de research project risk."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("central de research project risk.") or ("central tax research project ii."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("central de research project risk.") OR ("central tax research project ii."))*.
• Removing quotes may allow a broader search: (( central de research project risk. ) or ( central tax research project ii. ))*.