Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
tang luan » dung luan
ho chieu » theo chieu, hoc thieu, doi chieu
anh tang » anh bang, anh dang, anh nang
luan han » luan hoan, luan phan, luan van
cong tac » cong ty
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - anh tang luan han ((huong dan) or (cong tac)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - anh tang luan han ((huong dan) OR (cong tac)) toan cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - anh tang luan han ((huong dan) or (cong tac)) toan cao*.