Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, hien hanh
trang cua » tang cua, trung cua, thang cua
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
cong tac » cong ty
tac doan » tap doan, tan doan, thai doan
doan ca » doan cap, dan ca, doan va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) or (dieu hanh)) - hanh ((trang cua) OR (tranh cua)) hang cong tac doan ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (dieu hanh)) - hanh ((trang cua) OR (tranh cua)) hang cong tac doan ca.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (dieu hanh)) - hanh ((trang cua) OR (tranh cua)) hang cong tac doan ca".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (dieu hanh)) - hanh ((trang cua) OR (tranh cua)) hang cong tac doan ca*.