Perhaps you should try some spelling variations:
dong yang » dong hoang, dan yang, dong jung
yang yang » wang yan
wang yang » wang yan, wang liang, wang yanling
than lang » than bling, than large, thang long
yan than » van thanh, yan zhang, yan clan
lang hai » dang hai, shang hai, hong hai
di hua » li hua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((dong yang) OR (yang yang))) or (wang yang)) di hua (rene or gene) yan than lang hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((dong yang) OR (yang yang))) OR (wang yang)) di hua (rene OR gene) yan than lang hai ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((dong yang) OR (yang yang))) or (wang yang)) di hua (rene or gene) yan than lang hai ;*".