Perhaps you should try some spelling variations:
chiet tach » chieu sach
nang luan » tang luan, hang luan, nang quan
ho chiet » ho chieu, ho thiet, hoc thiet
anh nang » ganh nang, anh bang, anh dang
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 chiet tach - anh nang luan han ((huong dan) or (cong tac)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - anh nang luan han ((huong dan) OR (cong tac)) toan cao.
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - anh nang luan han ((huong dan) or (cong tac)) toan cao*.