Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
nhanh mang » hanh mang, nhanh quang, nhanh thang
nhanh lang » nhanh quang, nhanh thang, nhan dang
luan nhung » luan chung, luan hung, quan nhung
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan ban » van ban

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

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