Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
canh trinh » canh tranh, hanh trinh, canh tinh
trinh xay » trinh ky
thanh cau » thanh chau, thanh mau, nhanh cau
ho chieu » theo chieu, hoc thieu, doi chieu
cong ban » cong bang, cong san, cong dan
cong tan » cong tac, cong san, cong thanh

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 - canh trinh xay dung ((cong ban) OR (cong tan)) thanh cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - canh trinh xay dung ((cong ban) OR (cong tan)) thanh cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - canh trinh xay dung ((cong ban) OR (cong tan)) thanh cau*.