Perhaps you should try some spelling variations:
credit during » credit scoring, credit rating, exit during
dean credit » clean credit, deals credit, de credit
during risk » using risk, during crises, during crisis
wang liang » wang yang
among shiu » among hiv, among sri, wong shiu
yang yang » wang yang, wang yan

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yang yang) or (wang liang)) dean credit during risk among shiu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yang yang) OR (wang liang)) dean credit during risk among shiu ;*.