Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh manh » hanh mang, lanh manh, hoang manh
tuong tac » luong tai, tuong lai
ho chieu » hoc thieu, doi chieu, mot chieu
cong tac » cong ty
toan tap » toan ban
manh va » hanh va, anh va, minh va

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 (theo chieu)) sach - hanh manh va nhung ((tuong tac) or (cong tac)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - hanh manh va nhung ((tuong tac) OR (cong tac)) toan tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) sach - hanh manh va nhung ((tuong tac) or (cong tac)) toan tap*".