Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
nhanh lang » nhanh quang, nhanh thang, nhan dang
lang doan » long doan, hang doanh, quang doan
cong tinh » cong trinh, long tinh, cong thanh
cong vinh » cong trinh, trong vinh, cong viec
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) OR (chieu sach)) - nhanh lang doan phuong ((cong tinh) or (cong vinh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - nhanh lang doan phuong ((cong tinh) OR (cong vinh)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (chieu sach)) - nhanh lang doan phuong ((cong tinh) or (cong vinh)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (chieu sach)) - nhanh lang doan phuong ((cong tinh) or (cong vinh)) toan tap*.