Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
chieu sang » chieu sach, chieu xanh, nhieu tang
phong cong » phong chong, thong cong, chong cong
hieu lang » hieu quang, nhieu tang, hieu van
tuong cua » truong cua, huong cua, thong cua
cua phong » cua phuong, cua khong, cuu phong
nhanh cau » nhanh cay, thanh chau, nhanh ha
cong dan » cong san, cong tan, huong dan
phan cau » phan dau, phan cac, phan tu

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 tuong cua phong cong dan ((nhanh cau) OR (phan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) OR (chieu sang)) - thanh tuong cua phong cong dan ((nhanh cau) or (phan cau))~".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) OR (chieu sang)) - thanh tuong cua phong cong dan ((nhanh cau) or (phan cau))*.