Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
hieu lang » chieu sang, hieu quang, nhieu tang
manh tung » manh hung, thanh tung
dang cong » dung cong
tung cua » trung cua, tuong cua, dung cua
cua dang » cua cong, cua ban
cong van » cong vang, cong san, song van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu manh) or (hieu lang)) - manh tung cua dang cong van ((toan ban) OR (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (hieu lang)) - manh tung cua dang cong van ((toan ban) OR (van ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu manh) or (hieu lang)) - manh tung cua dang cong van ((toan ban) OR (van ban))".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (hieu lang)) - manh tung cua dang cong van ((toan ban) OR (van ban))*.