Perhaps you should try some spelling variations:
thong thuong » thong thong, hang thuong, cong thuong
chieu sang » chieu sach, chieu xanh, hieu lang
thuong dan » huong dan, thuong han, thuong dam
doi chieu » doc hieu, doi chi, ho chieu
trung cap » truong cao, trung tam
thanh cac » hanh cac, thanh bac, thanh ca
tung cap » cung cap, thong cap, trong cap

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 - thanh ((tung cap) OR (trung cap)) thong thuong dan ((thanh cac) or (thanh san))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh ((tung cap) OR (trung cap)) thong thuong dan ((thanh cac) OR (thanh san)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - thanh ((tung cap) OR (trung cap)) thong thuong dan ((thanh cac) or (thanh san))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh ((tung cap) OR (trung cap)) thong thuong dan ((thanh cac) or (thanh san))*.