Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
chieu tinh » trieu tinh, lieu tinh, chau tinh
dung luat » dung luan, dung quat, dung dat
thong tan » thong than, thong tran, thong tin
dung cua » dung luan, dung cho
tan toan » tan tran, tap toan, van 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) OR (dung cua)) thong thong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu tinh)) - hanh ((dung luat) OR (dung cua)) thong thong tan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chieu tinh)) - hanh ((dung luat) OR (dung cua)) thong thong tan toan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chieu tinh)) - hanh ((dung luat) OR (dung cua)) thong thong tan toan ban*.