Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
nhanh lang » nhanh quang, nhanh thang, nhan dang
thong cong » trong cong, thong thong, phong chong
tong cong » trong cong, cong cong, dung cong
toan cao » toan tap
toan ban » van ban
lang va » lang van, hang va, lang ha

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 lang va ((thong cong) or (tong cong)) vang ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - nhanh lang va ((thong cong) OR (tong cong)) vang ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - nhanh lang va ((thong cong) or (tong cong)) vang ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - nhanh lang va ((thong cong) or (tong cong)) vang ((toan cao) OR (toan ban))*.