Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sang » chieu sach, chieu xanh, hieu lang
dung cong » dung trong
tranh va » tranh van, trang va, thanh va
trinh va » trinh van, trinh vat, trinh ve
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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: doi ((chieu tinh) or (chieu sang)) - canh ((tranh va) OR (trinh va)) dung cong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu tinh) OR (chieu sang)) - canh ((tranh va) OR (trinh va)) dung cong dan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu tinh) or (chieu sang)) - canh ((tranh va) OR (trinh va)) dung cong dan toan tap".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu tinh) or (chieu sang)) - canh ((tranh va) OR (trinh va)) dung cong dan toan tap*.