Perhaps you should try some spelling variations:
yong yang » yang yang, dong yang, kyoung yang
ying yang » yang yang, yin yang, ying chang
gain yang » daun yang, yin yang
zhang yan » zhang fan, zhang jian, wang yan
dan yang » daun yang, wang yang, yang yang
tan yang » tan ying, tan yong, tao yang
xi zhang » li zhang, xiao zhang, bin zhang

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) OR (ying yang)) yun ((((gain yang) or (dan yang))) or (tan yang)) xi zhang yan ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yong yang) OR (ying yang)) yun ((((gain yang) OR (dan yang))) OR (tan yang)) xi zhang yan ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yong yang) OR (ying yang)) yun ((((gain yang) or (dan yang))) or (tan yang)) xi zhang yan ;*".