Perhaps you should try some spelling variations:
crisis models » crises models, crisis model, crises model
wang yuhan » wang luhang, wang yan, wang yidan
loo credit » good credit, food credit, photo credit
crisis war » crisis what, crisis wave, crisis ways
wang yang » wang yan, wang liang, wang yanling
ying loo » ying hooi

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yang) OR (wang yuhan)) ying loo credit rating ((crisis models) OR (crisis war)) six ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang yang) OR (wang yuhan)) ying loo credit rating ((crisis models) OR (crisis war)) six ;*.