Perhaps you should try some spelling variations:
leong yeon » jeong yeon, seung yeon
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
mun leong » min jeong
test kaw » test kit, test awt, test ke
yang yi » yang di, yang xi, yang jui
test a » test _, test 4, test 5

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang yang yi ((test kaw) OR (test a)) mun leong yeon ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang yang yi ((test kaw) OR (test a)) mun leong yeon ;*".