Perhaps you should try some spelling variations:
liang yang » liang ying, wang yang, huang yang
cost using » costs using, cost housing, test using
using risk » during risk, using rs, funding risk
yang yang » wang yang, wang yan
among hui » among heis, among eu, among di
tong hui » wang hui
eu cost » au costa, der cost, end cost

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((liang yang) or (yang yang)) eu cost using risk ((among hui) OR (tong hui)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((liang yang) OR (yang yang)) eu cost using risk ((among hui) OR (tong hui)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((liang yang) or (yang yang)) eu cost using risk ((among hui) OR (tong hui)) ;".
• Adding a wildcard symbol may retrieve word variants: wang ((liang yang) or (yang yang)) eu cost using risk ((among hui) OR (tong hui)) ;*.