Perhaps you should try some spelling variations:
cong huong » cong thuong, cong luong, cong hung
hien nhanh » thien thanh, tien thanh, dien thanh
dang khanh » dang thanh, dan khanh, quang khanh
hien hanh » dieu hanh
dang hanh » dang thanh, ban hanh, dang van
lang ban » hang ban, lang van, nang ban
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 nhanh) or (hien hanh)) - lang ban cua cong huong ((dang hanh) or (dang khanh)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (hien hanh)) - lang ban cua cong huong ((dang hanh) OR (dang khanh)) tu.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) or (hien hanh)) - lang ban cua cong huong ((dang hanh) or (dang khanh)) tu*.