Perhaps you should try some spelling variations:
doi trieu » dong trieu, doi chieu, doi trinh
dung cong » dung trong
tra tuan » tran tuan, tra quan, tri tuan
tri quan » trinh quan, hai quan, mai quan
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
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: doi trieu tinh - thanh ((tra tuan) or (tri quan)) dung cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi trieu tinh - thanh ((tra tuan) OR (tri quan)) dung cong tan toan cau.
• Adding a wildcard symbol may retrieve word variants: doi trieu tinh - thanh ((tra tuan) or (tri quan)) dung cong tan toan cau*.