Perhaps you should try some spelling variations:
thanh trinh » hanh trinh, thanh tinh, thanh binh
mang thong » mang trong, hang thuong, dang thuong
sinh sach » chinh sach, sinh san, sang sach
mat thong » suat thong, xuat thong, va thong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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: hoc sinh sach - thanh trinh ((mat thong) OR (mang thong)) cong dan than cap~.
• Adding a wildcard symbol may retrieve word variants: hoc sinh sach - thanh trinh ((mat thong) or (mang thong)) cong dan than cap*.