Perhaps you should try some spelling variations:
thien tinh » khien tinh, thien minh, tien tinh
hanh trinh » hanh chinh
hoc thien » hoc hien, hoc thieu, hoc thiet
cua dang » cua cong, cua ban
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
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 thien tinh - ((hanh trinh) or (canh tranh)) cua dang ((cong dan) OR (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien tinh - ((hanh trinh) OR (canh tranh)) cua dang ((cong dan) OR (cong san)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien tinh - ((hanh trinh) or (canh tranh)) cua dang ((cong dan) OR (cong san)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc thien tinh - ((hanh trinh) or (canh tranh)) cua dang ((cong dan) OR (cong san)) toan ban*.