Perhaps you should try some spelling variations:
thong quang » thong quan, luong quang, thong dung
chieu sang » chieu sach, chieu xanh, hieu lang
chieu tinh » trieu tinh, lieu tinh, chau tinh
thong qua » thong quan, thong cua, thong tu
dung cong » dung trong
cong tac » cong ty
tac toan » tap toan, tam toan, hach 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: doi ((chieu sang) or (chieu tinh)) - thanh ((thong quang) OR (thong qua)) dung cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (chieu tinh)) - thanh ((thong quang) OR (thong qua)) dung cong tac toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) or (chieu tinh)) - thanh ((thong quang) OR (thong qua)) dung cong tac toan ban".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) or (chieu tinh)) - thanh ((thong quang) OR (thong qua)) dung cong tac toan ban*.