Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
hieu lang » hieu quang, nhieu tang, hieu van
cap thong » cap tong, chap thuong, phap thong
thanh bac » nhanh bac, thanh bai, thanh san
tung cap » trung cap, cung cap, thong cap
cong san » cong tac
than cap » khan cap, thanh lap, thanh cac

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

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