Perhaps you should try some spelling variations:
hien hanh » dieu hanh
dang cong » dung cong
anh tang » anh bang, anh dang, anh sang
anh nang » ganh nang, anh bang, anh dang
cua dang » cua cong, cua ban
van toan » van tuan, van thanh, manh toan
van tan » van tuan, van ban, van tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien hanh - ((anh tang) or (anh nang)) cua dang cong ((van toan) or (van tan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - ((anh tang) OR (anh nang)) cua dang cong ((van toan) OR (van tan)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - ((anh tang) or (anh nang)) cua dang cong ((van toan) or (van tan)) ban*.