Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
luan chung » luan chinh
doi chieu » doc hieu, doi chi, ho chieu
luan hung » lan hung, luan ung, tuan hung
anh bang » anh hoang, anh quang, tinh bang
cong tac » cong ty
tac toan » tap toan, tam toan, hach 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 chieu tinh - anh bang ((luan hung) or (luan chung)) cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - anh bang ((luan hung) OR (luan chung)) cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - anh bang ((luan hung) or (luan chung)) cong tac toan cau*.