Perhaps you should try some spelling variations:
changed china » change china, exchange china, changing china
luong thanh » long thanh, truong thanh
thanh has » thanh dam, thanh van
ying jean » cling jean, young jean, ying jin
bonn shin » song shin, bonn mein
bonn ein » bonn mein, bonn die, kann ein

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

• Performing a fuzzy search may retrieve terms with similar spellings: luong thanh has ((changed china) or (exchanges china)) ying jean ((bonn shin) or (bonn ein)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: luong thanh has ((changed china) OR (exchanges china)) ying jean ((bonn shin) OR (bonn ein)) ;.
• Adding a wildcard symbol may retrieve word variants: luong thanh has ((changed china) or (exchanges china)) ying jean ((bonn shin) or (bonn ein)) ;*.