Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
truong thanh » truong trung, truong thpt, truong chung
theo chieu » theo tieu, ho chieu, theo chu
hoc thieu » toc thieu, hoc hien
dong tan » duong tan, dong san, cong tan
dong tai » dung tai, luong tai, cong tac
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (theo chieu)) sach - thanh truong thanh cong ((dong tan) OR (dong tai)) khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (theo chieu)) sach - thanh truong thanh cong ((dong tan) OR (dong tai)) khan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (theo chieu)) sach - thanh truong thanh cong ((dong tan) OR (dong tai)) khan cap".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (theo chieu)) sach - thanh truong thanh cong ((dong tan) OR (dong tai)) khan cap*.