Perhaps you should try some spelling variations:
seung yeon » jeong yeon, seung joon, seung won
wang ying » wang yang, wang yong, wang jing
ying yang » yang yang, yin yang, ying chang
yi test » i test, ii test, ein test
ai test » api test, i test, ii test
kaw min » kyaw min, kan min, law main
han men » can men, han en, han 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 ying yang ((yi test) OR (ai test)) ((kaw min) OR (han men)) seung yeon ;~.
• Adding a wildcard symbol may retrieve word variants: wang ying yang ((yi test) or (ai test)) ((kaw min) or (han men)) seung yeon ;*.