Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sach » chieu sach, thien hach, hieu cach
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
hang nong » thang long, han tong
khan cap » than cap, khoan cam, phan cac
khan ap » han ap, khan dam

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 thieu sach - thanh trung cua ((nhung cong) OR (hang nong)) dan ((khan cap) OR (khan ap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - thanh trung cua ((nhung cong) or (hang nong)) dan ((khan cap) OR (khan ap))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh trung cua ((nhung cong) or (hang nong)) dan ((khan cap) OR (khan ap))*.