Perhaps you should try some spelling variations:
thieu tach » thien hach, chiet tach, chieu sach
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
cong dan » cong san, cong tan, huong dan
than cau » toan cau, phan cau, thanh chau
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 thieu tach - thanh ((trung cua) OR (trung cap)) thong cong dan ((than cau) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tach - thanh ((trung cua) OR (trung cap)) thong cong dan ((than cau) or (than cap))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tach - thanh ((trung cua) OR (trung cap)) thong cong dan ((than cau) or (than cap))*.