Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
dung phuong » dung thuong, bang phuong, dung chung
phuong tinh » phuong trinh, phuong binh, khuong tinh
chieu sach » chinh sach, chiet tach, chieu sang
truong cua » truong ca, truong quan, truong cao
hieu lang » chieu sang, hieu quang, nhieu tang
cua dung » cua dang, cua dong, qua dung
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sach) or (hieu lang)) - thanh truong cua dung phuong tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (hieu lang)) - thanh truong cua dung phuong tinh toan ban*.