Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh
hieu manh » hieu nganh, dieu hanh, hien hanh
hanh than » hanh han, hanh nhan, hanh phan
cong cong » cong dong, trong cong, dung cong
than cua » nhan cua, thai cua, ban cua
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan 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 xanh))) or (chieu sang)) - hanh than cua cong cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hieu manh) OR (chieu xanh))) OR (chieu sang)) - hanh than cua cong cong tan van ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((hieu manh) OR (chieu xanh))) or (chieu sang)) - hanh than cua cong cong tan van ban*".