Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
yang weng » huang weng, yang yang, yang jing
weng wang » wen wang, weng fang, hong wang
ying yang » yang yang, yin yang, ying chang
yuan kang » yuan chang, chan kang, yuan kai
yuan wang » yan wang, yuan chang, qian wang

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "yang weng wang yuhan ying yang ((yuan kang) OR (yuan wang)) han ;~".
• Adding a wildcard symbol may retrieve word variants: yang weng wang yuhan ying yang ((yuan kang) OR (yuan wang)) han ;*.