Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
trung cua » truong cua, trung tuan, trung cap
cong tinh » cong trinh, long tinh, cong thanh
cong vinh » cong trinh, trong vinh, cong viec
cua dong » chua dong, cua cong, cua dang
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc hien) or (theo chieu)) tinh - thanh trung cua dong ((cong tinh) OR (cong vinh)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (theo chieu)) tinh - thanh trung cua dong ((cong tinh) OR (cong vinh)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hien) or (theo chieu)) tinh - thanh trung cua dong ((cong tinh) OR (cong vinh)) toan ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (theo chieu)) tinh - thanh trung cua dong ((cong tinh) OR (cong vinh)) toan ban*.