Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
nhanh lang » nhanh quang, nhanh thang, nhan dang
thong cong » trong cong, thong thong, phong chong
tong cong » trong cong, cong cong, dung cong
dang toan » dang tran, dan toan, dung toan
toan cao » toan ban, toan tap
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) OR (chieu sach)) - nhanh lang va ((thong cong) or (tong cong)) dang toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sach)) - nhanh lang va ((thong cong) OR (tong cong)) dang toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) OR (chieu sach)) - nhanh lang va ((thong cong) or (tong cong)) dang toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) OR (chieu sach)) - nhanh lang va ((thong cong) or (tong cong)) dang toan cao*.