Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
chieu tinh » trieu tinh, lieu tinh, chau tinh
luat thong » luat thuong, suat thong, xuat thong
hanh dung » thanh dung, anh dung, hanh dong
dung luat » dung luan, dung quat, dung cua
thong tap » thong cap, tong tap, thong tai
tap toan » tap doan, tap quan, bai toan
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: ho ((chieu sang) or (chieu tinh)) - hanh dung luat thong thong tap toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu tinh)) - hanh dung luat thong thong tap toan ban.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chieu tinh)) - hanh dung luat thong thong tap toan ban*.