Perhaps you should try some spelling variations:
leong yeon » jeong yeon, seung yeon
wang yong » wang yang, wang hyoung, wang yan
yong yang » yang yang, dong yang, ying yang
seung won » seung joon, seung yeon, seung youn
ai test » api test, ii test, ein test
kaw mun » kyaw min
i test » i testi, ii test, 2 test

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