Perhaps you should try some spelling variations:
kthien tinh » khien tinh, thien minh, tien tinh
thanh trung » thanh tung
thien tinh » khien tinh, thien minh, tien tinh
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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 ((thien tinh) or (kthien tinh)) - thanh trung cua nhung cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien tinh) OR (kthien tinh)) - thanh trung cua nhung cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien tinh) or (kthien tinh)) - thanh trung cua nhung cong dan toan cau*.