Perhaps you should try some spelling variations:
ratings risk » patients risk
fund credit » sound credit, bond credit, land credit
food credit » good credit
wang liang » wang yang
liang ying » liang liying, huang ying, zhang ying
work some » works some, work home, work women
work sren » work karen, work trend, work sex

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang liang ying ((fund credit) OR (food credit)) ratings risk ((work some) OR (work sren)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang liang ying ((fund credit) or (food credit)) ratings risk ((work some) or (work sren)) ;*.