Perhaps you should try some spelling variations:
chiet tach » chieu sach
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh tang » hanh trang, anh tang, hanh mang
bang cong » dang cong, bang song, hang cong
tang cua » mang cua, hang cua, tang luan
cua bang » chua bang, cua ban, cua dang
cong tac » cong ty
toan cao » toan tap
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 ((hieu manh) or (chiet tach)) - hanh tang cua bang cong tac ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (chiet tach)) - hanh tang cua bang cong tac ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (chiet tach)) - hanh tang cua bang cong tac ((toan cao) or (toan ban))*.