Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
chau tinh » cuu tinh, ha tinh, cua tinh
dung cong » dung trong
cong tac » cong ty
lua dung » qua dung, luan hung, qua duong
cong tan » cong san, cong thanh, cong ty
tac lua » tac cua, tac quan, cac luat
tan phi » tac phi, tan phu, toan phai
phi phi » chi phi, phi thi, thi phi

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 (chau tinh)) - cong tac lua dung cong tan phi phi~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) OR (chau tinh)) - cong tac lua dung cong tan phi phi".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) OR (chau tinh)) - cong tac lua dung cong tan phi phi*.