Perhaps you should try some spelling variations:
dong thong » thong thong, nong thon, dong thanh
doi chieu » doc hieu, doi chi, mot chieu
thong dan » thong van, tuong dan, thong den
thanh cac » hanh cac, thanh bac, thanh ca
ho chieu » theo chieu, hoc thieu, mot chieu
cong cac » cuong cac, cong tac, cong cau
cac dong » cac duong, cac cong, cac dang
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: ((ho chieu) or (doi chieu)) sach - thanh cong cac dong thong dan ((khan cap) or (thanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sach - thanh cong cac dong thong dan ((khan cap) OR (thanh cac)).
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chieu)) sach - thanh cong cac dong thong dan ((khan cap) or (thanh cac))*.