Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
hang cong » dang cong, hang nong, bang cong
ban thanh » ban hang
ban hanh » ban hang
cong su » cong suc, cong sua, cong cu
su hang » su khang, su dang, su han

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) OR (chieu sach)) - thanh cong su hang cong ((ban thanh) or (ban hanh)) hai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - thanh cong su hang cong ((ban thanh) OR (ban hanh)) hai.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (chieu sach)) - thanh cong su hang cong ((ban thanh) or (ban hanh)) hai".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (chieu sach)) - thanh cong su hang cong ((ban thanh) or (ban hanh)) hai*.