Perhaps you should try some spelling variations:
chiang chen » chang chen, zhigang chen
long trinh » long trip, long thanh
china chen » china shen, china china, china chang
song sein » song shin, song jin, song min
long tin » long tip, long time, long tail
yang jin » yang jie, yang jun, ying jin
jin song » jie song, john song, kim song

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((long tin) OR (long trinh)) ban ((chiang chen) or (china chen)) yang jin song sein ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((long tin) OR (long trinh)) ban ((chiang chen) OR (china chen)) yang jin song sein ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((long tin) OR (long trinh)) ban ((chiang chen) or (china chen)) yang jin song sein ;".
• Adding a wildcard symbol may retrieve word variants: ((long tin) OR (long trinh)) ban ((chiang chen) or (china chen)) yang jin song sein ;*.