Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
cua khong » hua khong, cua phuong, cua thuong
ho chieu » theo chieu, doi chieu, mot chieu
mang cua » manh cua, dung cua, ban cua
tong tap » tuong tac, trong tan, tong hop
cong tac » cong ty
toan tap » toan ban
cach » cac, sach

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) tinh - cach mang cua khong ((tong tap) OR (cong tac)) toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) tinh - cach mang cua khong ((tong tap) or (cong tac)) toan tap~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) tinh - cach mang cua khong ((tong tap) or (cong tac)) toan tap*.