Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu manh » hieu nganh, dieu hanh, hien hanh
manh hung » anh huong
bang cong » dang cong, bang song, hang cong
nhanh cay » nhanh ha, nhanh bac, nhanh va
hung chu » nhung chu, hung thu, chung chou
chu bang » thu bang, chuc nang, chu quang
cong san » cong tac
hanh cac » hang cac, hanh cat, hanh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu manh) or (chieu xanh)) - manh hung chu bang cong san ((hanh cac) OR (nhanh cay))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu manh) OR (chieu xanh)) - manh hung chu bang cong san ((hanh cac) OR (nhanh cay)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu manh) or (chieu xanh)) - manh hung chu bang cong san ((hanh cac) OR (nhanh cay))".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu manh) or (chieu xanh)) - manh hung chu bang cong san ((hanh cac) OR (nhanh cay))*.