Perhaps you should try some spelling variations:
hien hanh » dieu hanh
doanh cua » doanh luan
hang cong » dang cong, hang nong, bang cong
tan thanh » tran thanh, tang thanh, toan thanh
cong tan » cong tac, cong san, cong thanh
thanh tu » hanh tu, nhanh tu, thanh tung
ban cua » ban quan

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