Perhaps you should try some spelling variations:
chang ch'un » chang chen, chang hsun
chang chuan » chung chuan, chen chuan, chang chen
yang john » young john, king john, yang jin
song sein » song shin, song min, song seng
long tan » hong tan, long han, long thanh
song jin » song min, shang jin, song shin
tan tan » tas tan, tin tan, tang tang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: long tan tan ((chang chuan) OR (chang ch'un)) yang john ((song sein) OR (song jin)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "long tan tan ((chang chuan) OR (chang ch'un)) yang john ((song sein) or (song jin)) ;~".
• Adding a wildcard symbol may retrieve word variants: long tan tan ((chang chuan) OR (chang ch'un)) yang john ((song sein) or (song jin)) ;*.