Perhaps you should try some spelling variations:
wei yang's » yiwei wang's
wang yang » wang yan, wang liang, wang yanling
dong ping » dong sin, dong bin, dong jung
wei yang » pei yang, wei wang, wei shang
kim tong » kim song, kim dong, kim jong
tong hui » wang hui
dong di » dong sin

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 yang) OR (((dong ping) OR (dong di)))) ya ma ((wei yang) OR (wei yang's)) kim tong hui ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yang) or (((dong ping) or (dong di)))) ya ma ((wei yang) OR (wei yang's)) kim tong hui ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang yang) or (((dong ping) or (dong di)))) ya ma ((wei yang) OR (wei yang's)) kim tong hui ;*.