Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
trung gap » trung cap, trung gay, trung lap
gap trong » ap trong, gay trong, lap trong
thanh cac » hanh cac, thanh bac, tranh cac
ho chiet » ho chieu, ho thiet, hoc thiet
cong san » cong tac
thanh ca » thanh cha, thanh ha, thanh va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - thanh trung gap trong cong san ((thanh cac) or (thanh ca))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - thanh trung gap trong cong san ((thanh cac) OR (thanh ca)).
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - thanh trung gap trong cong san ((thanh cac) or (thanh ca))*.