Perhaps you should try some spelling variations:
yang zhang » yan zhang, zhang zhang, yang yang
zhang hong » zhang rong, change hong, zhang zhang
liang sun » liang dan, liang tan, wing sun
chia rene » chia wen, china ren
china who » china why, china what, china won
jing sun » wing sun, cong sun, jing guo
hong yu » wong yue

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 ((jing sun) OR (liang sun)) ((chia rene) OR (china who)) yang zhang hong yu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((jing sun) OR (liang sun)) ((chia rene) or (china who)) yang zhang hong yu ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((jing sun) OR (liang sun)) ((chia rene) or (china who)) yang zhang hong yu ;*.