Perhaps you should try some spelling variations:
duong thanh » dong thanh, muong thanh, luong thanh
thanh toan » thanh hoa, thanh san, tinh toan
van thang » van thanh, van khang, van hang
hien anh » hien hanh, thien anh, dien anh
kha nang » phap nang, ky nang, ki nang
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien anh - canh tranh ((van thang) or (kha nang)) duong thanh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien anh - canh tranh ((van thang) OR (kha nang)) duong thanh toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien anh - canh tranh ((van thang) or (kha nang)) duong thanh toan cau*.