Perhaps you should try some spelling variations:
yong yang » dong yang, ying yang, kyoung yang
yang yang » wang yang, wang yan
rhein tan » rheins tab, chen tan
tong shui » tong hui, cong shu, gong hui
a rhein » am rhein, 2 rhein, a rein
hong yu » wong yue
tan li » tang li, tian li, gan li

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 (yang yang)) a rhein tan li ((((hong seo) or (tong shui))) or (hong yu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yong yang) OR (yang yang)) a rhein tan li ((((hong seo) OR (tong shui))) OR (hong yu)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yong yang) OR (yang yang)) a rhein tan li ((((hong seo) or (tong shui))) or (hong yu)) ;*".