Perhaps you should try some spelling variations:
hang hang » nang hang, cang thang, hung thang
hanh nhan » thanh nhan, danh nhan, anh nhan
tong cong » trong cong, cong cong, dung cong
ho trieu » mot trieu, 25 trieu, ho chieu
30 trieu » 25 trieu
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap
va tong » va thong, va tuong, va trong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho trieu) OR (30 trieu)) tinh - ((hang hang) or (hanh nhan)) va tong cong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho trieu) OR (30 trieu)) tinh - ((hang hang) OR (hanh nhan)) va tong cong dan than tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho trieu) OR (30 trieu)) tinh - ((hang hang) or (hanh nhan)) va tong cong dan than tap".
• Adding a wildcard symbol may retrieve word variants: ((ho trieu) OR (30 trieu)) tinh - ((hang hang) or (hanh nhan)) va tong cong dan than tap*.