Perhaps you should try some spelling variations:
trung tran » trung thanh, trung tam, hung tran
trung tuan » trung thanh, trung tam, tran tuan
doi chinh » do chinh, tai chinh, hoc chinh
dung cong » dung trong
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 chinh sach - thanh ((trung tran) or (trung tuan)) dung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chinh sach - thanh ((trung tran) OR (trung tuan)) dung cong tac toan cau*.