Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung tran » trung tuan, trung thanh, trung tam
tran trong » gian trong, quan trong, tran hong
doi chieu » doc hieu, doi chi, ho chieu
hoc thieu » toc thieu, hoc hien
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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 (hoc thieu)) sach - thanh trung tran trong cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (hoc thieu)) sach - thanh trung tran trong cong tac toan ban.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (hoc thieu)) sach - thanh trung tran trong cong tac toan ban*.