Perhaps you should try some spelling variations:
hoc thieu » toc thieu
cuong tap » luong tap, cong tac, luong tai
van manh » van minh, van anh, van hanh
manh cua » doanh cua, ban cua
cua dung » cua dang, cua dong, qua dung
cong tap » cong tac, cong tan, tong tap
toan ban » van ban

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 (hoc hien)) sach - van manh cua dung ((cong tap) OR (cuong tap)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) sach - van manh cua dung ((cong tap) OR (cuong tap)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (hoc hien)) sach - van manh cua dung ((cong tap) OR (cuong tap)) toan ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) sach - van manh cua dung ((cong tap) OR (cuong tap)) toan ban*.