Perhaps you should try some spelling variations:
lend credit » land credit, bond credit, fund credit
rating risk » ratings risk, trading risk, raising risk
liang ying » liang liying, huang ying, zhang ying
liang big » liang li
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 big) OR (liang ying)) lend credit rating risk ((work some) OR (work sren)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((liang big) OR (liang ying)) lend credit rating risk ((work some) or (work sren)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((liang big) OR (liang ying)) lend credit rating risk ((work some) or (work sren)) ;*.