Perhaps you should try some spelling variations:
dam region » das region, der region, die region
kong saur » kong siu, kong your, wong sau
wang yao » wang yan, yang yao, gang yao
yao yang » yang yang
dam rein » am rhein, der rein, a rein
yang jin » yang jie, yang jun, ying jin
yang xi » yang di, yang yi, yang jui
sar » sara, star

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 yao yang ((dam rein) OR (dam region)) ((yang jin) OR (yang xi)) ((kong saur) OR (kong sar)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yao yang ((dam rein) or (dam region)) ((yang jin) or (yang xi)) ((kong saur) OR (kong sar)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yao yang ((dam rein) or (dam region)) ((yang jin) or (yang xi)) ((kong saur) OR (kong sar)) ;*.