Perhaps you should try some spelling variations:
cost during » boost during, crust during, roosts during
west during » debt during, neet during, boost during
liang yang » liang ying, wang yang, huang yang
yang yang » wang yang, wang yan
risk tong » risk among, risk along
tong shui » tong hui, cong shu, gong hui

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 yang) OR (yang yang)) jun ((cost during) OR (west during)) risk tong shui ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((liang yang) or (yang yang)) jun ((cost during) OR (west during)) risk tong shui ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((liang yang) or (yang yang)) jun ((cost during) OR (west during)) risk tong shui ;*.