Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
wang yong » wang yang, wang hyoung, wang yan
hua tests » aus tests, aux tests, run tests
auf tests » aus tests, aux tests, auf texte
jie song » jae song, jin song, kim song
may jie » may june
shin » skin, sein, thin

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (wang yong)) ya ((hua tests) OR (auf tests)) may jie song shin ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong yang) or (wang yong)) ya ((hua tests) OR (auf tests)) may jie song shin ;~".
• Adding a wildcard symbol may retrieve word variants: ((dong yang) or (wang yong)) ya ((hua tests) OR (auf tests)) may jie song shin ;*.