Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
yan yang » yao yang, dan yang, tan yang
yi zhang » li zhang, xi zhang, bin zhang
yi chang » ii chang, ying chang, jin chang
hong hai » shang hai, zhong tai, dang hai
hong g » hong ng, hong w, hong 7
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yan yang) OR (yang yang)) du ((yi zhang) or (yi chang)) xin ((hong g) or (hong hai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yan yang) OR (yang yang)) du ((yi zhang) OR (yi chang)) xin ((hong g) OR (hong hai)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan yang) OR (yang yang)) du ((yi zhang) or (yi chang)) xin ((hong g) or (hong hai)) ;*".