Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
nong thong » nong thon, dong thong, tong thong
cong thong » cong thuong, cong trong, dong thong
trung cua » truong cua, trung tuan, trung cap
ho chiet » ho chieu, ho thiet, hoc thiet
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - thanh trung cua ((nong thong) OR (cong thong)) dan ((than cap) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - thanh trung cua ((nong thong) OR (cong thong)) dan ((than cap) OR (khan cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - thanh trung cua ((nong thong) OR (cong thong)) dan ((than cap) or (khan cap))".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - thanh trung cua ((nong thong) OR (cong thong)) dan ((than cap) or (khan cap))*.