Perhaps you should try some spelling variations:
china wang » china yang, china chang, china zhang
chan wang » chen wang, chan kang, chan eng
yi cheng » yu cheng, xi cheng, yi chang
wang di » yang di, wang d, wang li
di yang » du yang, yi yang, liu yang
yi chen » jui chen
chung h » chun h, chung _, chung hee

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 di yang ((yi chen) OR (yi cheng)) ((chan wang) OR (china wang)) chung h ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang di yang ((yi chen) or (yi cheng)) ((chan wang) OR (china wang)) chung h ;~".
• Adding a wildcard symbol may retrieve word variants: wang di yang ((yi chen) or (yi cheng)) ((chan wang) OR (china wang)) chung h ;*.