Perhaps you should try some spelling variations:
wang liang » wang yang
leong yeon » jeong yeon
seung yeon » jeong yeon, seung joon, seung won
test kit » test kits
ying yi » ming yi, ping yi, yin yi
yang yi » yang di, yang xi, yang jui
test ke » test bed, test der, test bei

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

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