Perhaps you should try some spelling variations:
yanling yang » ying yang
seung yeon » jeong yeon, seung joon, seung youn
yang yang » wang yang, wang yan
seung won » seung joon, seung youn, myung won
ai test » api test, i test, ii test
test a » test _, test 4, test 5
a mun » a man
wang » wing, wan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (wang OR lang) ((yanling yang) or (yang yang)) ai test a mun ((seung yeon) or (seung won)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wang OR lang) ((yanling yang) OR (yang yang)) ai test a mun ((seung yeon) OR (seung won)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang OR lang) ((yanling yang) or (yang yang)) ai test a mun ((seung yeon) or (seung won)) ;*".