Perhaps you should try some spelling variations:
yong yang » dong yang, ying yang, kyoung yang
yang yang » wang yang, wang yan
hong yeon » dong myeon, jeong yeon, hong seo
api test » i test
min hong » amin hong, tin hong, min hyoung
ai test » i test, ein test
ii test » i test, ii texts
kaw min » kyaw min, kan min, law main

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: wang ((yong yang) OR (yang yang)) ((((ai test) OR (api test))) OR (ii test)) kaw min hong yeon ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yong yang) or (yang yang)) ((((ai test) OR (api test))) or (ii test)) kaw min hong yeon ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yong yang) or (yang yang)) ((((ai test) OR (api test))) or (ii test)) kaw min hong yeon ;*.