Perhaps you should try some spelling variations:
thanh trung » thanh tung
thien minh » tien minh, trien minh, thien tinh
diep dinh » diep tinh, hiep dinh, diep ninh
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((diep dinh) or (thien minh)) - thanh trung cua nhung ((cong dan) OR (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((diep dinh) OR (thien minh)) - thanh trung cua nhung ((cong dan) OR (cong san)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((diep dinh) or (thien minh)) - thanh trung cua nhung ((cong dan) OR (cong san)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((diep dinh) or (thien minh)) - thanh trung cua nhung ((cong dan) OR (cong san)) toan cau*.