Perhaps you should try some spelling variations:
hoc chieu » hoc thieu, hoc hien, hoc dieu
luan dung » lan dung, luan dong, luan hung
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
anh tang » anh dang, anh nang, anh sang
anh bang » anh hoang, anh quang, tinh bang
cong tac » cong ty
tac nhan » tao nhan, cac nhan, dac nhan
nhan cau » nhanh cau, phan cau, nhan sau

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: ((hoc chieu) OR (ho chieu)) sach - ((anh tang) OR (anh bang)) luan dung cong tac nhan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) OR (ho chieu)) sach - ((anh tang) or (anh bang)) luan dung cong tac nhan cau~".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) OR (ho chieu)) sach - ((anh tang) or (anh bang)) luan dung cong tac nhan cau*.