Perhaps you should try some spelling variations:
long thanh » luong thanh, long han, long trinh
thanh tang » tang tang, thanh mung, thanh van
tang ching » hang china, tang chun, tang zheng
ching wen » ching kwan, ching fein, ching hea
wen yong » wang yong, chen yong, zhen yong
kim gong » kim song, kim jong, kim young
kim dong » kim song, kim jong, kim young

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

• Performing a fuzzy search may retrieve terms with similar spellings: long thanh tang ching wen yong ((kim gong) OR (kim dong)) hui ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "long thanh tang ching wen yong ((kim gong) OR (kim dong)) hui ;".
• Adding a wildcard symbol may retrieve word variants: long thanh tang ching wen yong ((kim gong) OR (kim dong)) hui ;*.