Perhaps you should try some spelling variations:
wang yuan » wang yuhan, wang yan, fang yuan
kai chuan » ka chuan, say chuan, tai chun
hai chuan » say chuan, ka chuan, tai chun
shang hai » shang kai, dang hai, chang ha
zhong tai » hong tan, hong hai, zhong zhi
dan yang » daun yang, tan yang, wang yang
yang jin » yang jie, yang jun, ying jin

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 yuan ((kai chuan) OR (hai chuan)) dan yang jin ((shang hai) OR (zhong tai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yuan ((kai chuan) OR (hai chuan)) dan yang jin ((shang hai) or (zhong tai)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yuan ((kai chuan) OR (hai chuan)) dan yang jin ((shang hai) or (zhong tai)) ;*.