Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thong cong » trong cong, tong cong, thong thong
trung cap » truong cao, trung tam
thanh bac » nhanh bac, thanh bai, thanh san
ho chieu » theo chieu, hoc thieu, doi chieu
tung cap » cung cap, thong cap, trong cap
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, thanh cac

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