Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
hoc thieu » toc thieu, hoc hien
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
luan ban » luan van, luan san, luan han
ban cong » bang cong, van cong, phan cong
cong tac » cong ty
toan cau » toan cao, toan tap, toan tai
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: ((theo chieu) or (hoc thieu)) sach - hanh tang luan ban cong tac ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (hoc thieu)) sach - hanh tang luan ban cong tac ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (hoc thieu)) sach - hanh tang luan ban cong tac ((toan cau) or (toan ban))*.