Perhaps you should try some spelling variations:
trinh xuat » trinh luat, trich xuat, trinh xay
trinh xuan » trinh quan, trinh luan, trinh luat
hoc thieu » toc thieu, hoc hien
ho chieu » theo chieu, doi chieu, mot chieu
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.

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