Perhaps you should try some spelling variations:
thanh trung » thanh tung
trien kinh » tri kinh, trinh kinh, trieu tinh
trien dich » mien dich
thong cong » tong cong, thong thong, phong chong
trung cua » truong cua, trung tuan, trung cap
dan chan » dan gian, dan ca, van chat
chan cap » khan cap, than cap, cao cap

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

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