Perhaps you should try some spelling variations:
credit using » credit during, credit funding, credit rating
liang ying » liang liying, huang ying, jiang yajing
zhang ying » zhang ming, zhang jing, zhang ping
using risk » during risk, using rs, funding risk
work sex » work six, work self, work sren
work so » work soc, works so, work some

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) OR (zhang ying)) good credit using risk ((work so) OR (work sex)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((liang ying) OR (zhang ying)) good credit using risk ((work so) or (work sex)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((liang ying) OR (zhang ying)) good credit using risk ((work so) or (work sex)) ;*.