Perhaps you should try some spelling variations:
thanh trung » thanh tung
doi chieu » doc hieu, doi chi, ho chieu
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
trung su » trung vu, trong su, trung du
cong tac » cong ty
toan cau » toan cao, toan ban, toan tai
toan tap » toan 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 (hoc thieu)) tinh - thanh trung su dung cong tac ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (hoc thieu)) tinh - thanh trung su dung cong tac ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (hoc thieu)) tinh - thanh trung su dung cong tac ((toan cau) or (toan tap))*.