Perhaps you should try some spelling variations:
chiet tach » chieu sach
trung dap » trung dai, trung dam, trung lap
trung cap » truong cao, trung tam
ho chiet » ho chieu, ho thiet, hoc thiet
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
than cap » khan cap, thanh lap, thanh cac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - thanh ((trung dap) OR (trung cap)) nhung ((cong ban) OR (cong san)) than cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - thanh ((trung dap) OR (trung cap)) nhung ((cong ban) or (cong san)) than cap~".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - thanh ((trung dap) OR (trung cap)) nhung ((cong ban) or (cong san)) than cap*.