Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh
hanh trung » thanh trung, hanh trang, manh trung
hieu manh » hieu nganh, dieu hanh, hien hanh
trong san » trong cac, cong san, dong san
trung ha » trung hoc, trung tam, trung cap
ha dung » hai dung, kha dung, nha dung
san van » tan van, luan van, tran 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 trung ha dung trong san 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 trung ha dung trong san 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 trung ha dung trong san van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (((chieu xanh) OR (chieu sang)))) - hanh trung ha dung trong san van ban*.