Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
thanh tung » thanh cong
hang cong » dang cong, hang nong, bang cong
tung cap » trung cap, cung cap, thong cap
cap hang » cap hoang, cap bang, cap han
ban hang » ngan hang
ban can » ban dan, ban hanh, ban quan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu xanh) or (chieu sang)) - thanh tung cap hang cong ((ban can) OR (ban hang)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sang)) - thanh tung cap hang cong ((ban can) OR (ban hang)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (chieu sang)) - thanh tung cap hang cong ((ban can) OR (ban hang)) cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chieu sang)) - thanh tung cap hang cong ((ban can) OR (ban hang)) cau*.