Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
trung thpt » truong thpt, trung thuc, trung nhat
hoc thieu » toc thieu, hoc hien
thpt dung » thpt duong, thpt hung, thpt dong
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
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 trung thpt dung ((cong tan) OR (cong tac)) khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (theo chieu)) sach - thanh trung thpt dung ((cong tan) OR (cong tac)) khan cap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (theo chieu)) sach - thanh trung thpt dung ((cong tan) OR (cong tac)) khan cap*".