Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
hoc chieu » hoc thieu, ho chieu, hoc hien
va thong » va thuong, va phuong, he thong
tung va » trung va, tuong va, dung va
ap dung » van dung

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sang - thanh tung va thong cong ((ap dung) OR (xay dung)) tai~".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - thanh tung va thong cong ((ap dung) OR (xay dung)) tai*.