Perhaps you should try some spelling variations:
dong hoang » hong hong
dong yang » wang yang, yang yang, dan yang
dong yeon » dong myeon, jeong yeon, wong yoon
api test » i test, ii test
min dong » min hong, min jeong, shin dong
ai test » i test, ii test, ein test
kan min » han min, kian ming, kyaw min

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 ((dong yang) OR (dong hoang)) ((ai test) OR (api test)) kan min dong yeon ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((dong yang) or (dong hoang)) ((ai test) or (api test)) kan min dong yeon ;*.