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
toc chieu » toc thieu, doc hieu, doi chieu
hoc thieu » toc thieu, hoc hien
cong san » cong tac
san toan » van toan, dan toan, manh 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: ((toc chieu) OR (hoc thieu)) sach - thanh trung tran trong cong san toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc chieu) OR (hoc thieu)) sach - thanh trung tran trong cong san toan ban".
• Adding a wildcard symbol may retrieve word variants: ((toc chieu) OR (hoc thieu)) sach - thanh trung tran trong cong san toan ban*.