Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, thi chieu
hanh dung » thanh dung, anh dung, hanh dong
luan dang » luan danh, luan dong, luan tang
luan nang » luan van, van nang, luan san
long tinh » cong tinh, trong tinh, luong tin
theo chu » cho chu, chao chu, theo yeu
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 chu)) sach - hanh dung ((luan dang) OR (luan nang)) long tinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo chu)) sach - hanh dung ((luan dang) OR (luan nang)) long tinh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (theo chu)) sach - hanh dung ((luan dang) OR (luan nang)) long tinh toan tap".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo chu)) sach - hanh dung ((luan dang) OR (luan nang)) long tinh toan tap*.