Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, nhieu tang
truong cac » truong cao, trong cac, truong ca
hieu lang » hieu quang, nhieu tang, hieu van
tuan dang » tran dang, tuan bang, tuan duong
tuan dung » tuan duong, tran dung, tan dung
cac thanh » bac thanh, ban thanh, cuu thanh
thanh cau » thanh chau, thanh mau, nhanh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) OR (chieu sang)) - thanh trung ((tuan dang) or (tuan dung)) truong cac thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (chieu sang)) - thanh trung ((tuan dang) OR (tuan dung)) truong cac thanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) OR (chieu sang)) - thanh trung ((tuan dang) or (tuan dung)) truong cac thanh cau".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) OR (chieu sang)) - thanh trung ((tuan dang) or (tuan dung)) truong cac thanh cau*.