Perhaps you should try some spelling variations:
liang yang » wang yang, yang yang, huang yang
liang ying » liang liying, huang ying, zhang ying
leong yeon » jeong yeon, seung yeon
test kian » test kits, test kit, test bias
mun leong » min jeong
jui test » ai test, api test, i test
kian mun » kian ming, chan mun

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 yang) OR (liang ying)) jui test kian mun leong yeon ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((liang yang) OR (liang ying)) jui test kian mun leong yeon ;*".