Perhaps you should try some spelling variations:
cheng yang » chen yang, cheng zhang, chen wang
wang yong » wang yang, wang hyoung, wang yan
yong yang » yang yang, dong yang, ying yang
jie zhang » jia zhang, li zhang, bin zhang
yu cheng » yu chen, _ cheng
jia fang » jia zhang, jing fang, ta fang
yang yu » yang yue, yang yun, yang yi

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yong yang yu cheng yang ((((jia fang) OR (xia fang))) or (jie zhang)) (sar or star) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yong yang yu cheng yang ((((jia fang) OR (xia fang))) OR (jie zhang)) (sar OR star) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yong yang yu cheng yang ((((jia fang) OR (xia fang))) or (jie zhang)) (sar or star) ;".
• Adding a wildcard symbol may retrieve word variants: wang yong yang yu cheng yang ((((jia fang) OR (xia fang))) or (jie zhang)) (sar or star) ;*.