Perhaps you should try some spelling variations:
dien tinh » diep tinh, dien hinh, dien kinh
bien tinh » bi tinh, yen tinh, diep tinh
cua trong » cua truong, cua trung, qua trong
anh dang » anh dong, anh dung, anh bang
dang cua » dung cua, dong cua, mang cua
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((dien tinh) or (bien tinh)) - anh dang cua trong cong dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((dien tinh) OR (bien tinh)) - anh dang cua trong cong dan than cap.
• Adding a wildcard symbol may retrieve word variants: hoc ((dien tinh) or (bien tinh)) - anh dang cua trong cong dan than cap*.