Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hieu manh » chieu xanh, hieu nganh, dieu hanh
doanh cua » doanh luan
dang cong » dung cong
manh cua » ban cua
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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 (chieu tinh)) - canh ((doanh cua) or (manh cua)) dang cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu tinh)) - canh ((doanh cua) OR (manh cua)) dang cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu tinh)) - canh ((doanh cua) or (manh cua)) dang cong dan van ban*.