Perhaps you should try some spelling variations:
luong thanh » truong thanh
long thanh » long han, long trinh, truong thanh
john song » john wong, john bonn, john ngosong
jin song » jie song, kim song, jin ying
jiao yan » xiao yuan, xiao yang, qian yan
yan hua » tan hua, ya hua, wang hua
tan li » tang li, tian li, gan li

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) OR (luong thanh)) tan li ((john song) or (jin song)) jiao yan hua ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((long thanh) OR (luong thanh)) tan li ((john song) OR (jin song)) jiao yan hua ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((long thanh) OR (luong thanh)) tan li ((john song) or (jin song)) jiao yan hua ;*".