Perhaps you should try some spelling variations:
thanh tung » thanh cong
hien hanh » dieu hanh
nong cong » cong cong, tong cong, nang cong
cua nong » cua cong, cuu nong, cua dong
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than cau » toan cau, phan cau, than cap

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 - ((thanh trung) or (thanh tung)) cua nong cong ban than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - ((thanh trung) OR (thanh tung)) cua nong cong ban than cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - ((thanh trung) or (thanh tung)) cua nong cong ban than cau*.