Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
doi chieu » doi chi, ho chieu, mot chieu
tam nhung » tham nhung, cam nhung, nam nhung
doc hieu » toc thieu, hoc thieu, hoc hien
cong tac » cong ty
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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) or (doc hieu)) tinh - thanh trung tam nhung cong tac ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) tinh - thanh trung tam nhung cong tac ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doc hieu)) tinh - thanh trung tam nhung cong tac ((toan cau) or (toan ban))*.