Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
thanh tung » thanh cong
hanh thao » thanh thao, hanh theo, hanh thuoc
doc hieu » toc thieu, hoc thieu, hoc hien
tac dung » sach dung, xay dung, tin dung
cong ban » cong bang, cong san, cong tan
ban hanh » ban hang
ho dung » hoc dung, hoi dung, so dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu nganh - thanh tung ((ho dung) or (tac dung)) cong ban hanh thao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu nganh - thanh tung ((ho dung) OR (tac dung)) cong ban hanh thao.
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - thanh tung ((ho dung) or (tac dung)) cong ban hanh thao*.