Perhaps you should try some spelling variations:
nhanh chuong » nhanh chong, thanh chuong, thanh huong
nhanh huong » thanh huong, nhanh hong, nhanh hung
theo chieu » ho chieu, theo chu, thi chieu
dong cong » duong cong, dung cong, dang cong
cua dong » chua dong, cua cong, cua dang
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) OR (theo tieu)) sach - ((nhanh huong) or (nhanh chuong)) cua dong cong tap toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) sach - ((nhanh huong) OR (nhanh chuong)) cua dong cong tap toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (theo tieu)) sach - ((nhanh huong) or (nhanh chuong)) cua dong cong tap toan tap".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (theo tieu)) sach - ((nhanh huong) or (nhanh chuong)) cua dong cong tap toan tap*.