Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tung » thanh cong
thuong ban » thuong han, thuong lan, tuong ban
hieu sang » hieu lang, hieu quang, nhieu tang
tung tuan » trung tuan, hung tuan, quang tuan
tuan hang » tuan hoang, tuan bang, tuan dang
phap cau » phan cau, pha cau, phap ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu sang) OR (chieu sang)) - thanh tung tuan hang thuong ban phap cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu sang) OR (chieu sang)) - thanh tung tuan hang thuong ban phap cau".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu sang) OR (chieu sang)) - thanh tung tuan hang thuong ban phap cau*.