Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
ngung cong » nhung cong, dung cong, nganh cong
hieu manh » hieu nganh, dieu hanh, hien hanh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cong van » cong vang, cong san, song van
phan cac » nhan cach, phan lap, phan van
phan dau » phan tu, hang dau
chat » nhat, phat

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)) - hanh tinh chat ngung cong van ((phan cac) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu manh) OR (chieu xanh)) - hanh tinh chat ngung cong van ((phan cac) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu manh) OR (chieu xanh)) - hanh tinh chat ngung cong van ((phan cac) or (phan dau))".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu manh) OR (chieu xanh)) - hanh tinh chat ngung cong van ((phan cac) or (phan dau))*.