Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
thieu sang » chieu sang, thieu khang, thieu quang
chieu sach » chinh sach, chiet tach, chieu sang
dang thanh » dong thanh, dang hanh, hoang thanh
tuong cua » truong cua, huong cua, thong cua
dung cong » dung trong
cong dang » cong dong, cong dan, cong dung
thanh cau » thanh chau, thanh mau, nhanh cau
cua dung » cua dang, cua dong, qua dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sang) or (chieu sach)) - thanh tuong cua dung cong dang thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (chieu sach)) - thanh tuong cua dung cong dang thanh cau*.