Perhaps you should try some spelling variations:
thanh tung » thanh cong
cua thong » cua thuong, cua khong, cua tong
thong dan » thong van, tuong dan, thong den
ho trieu » mot trieu, 25 trieu, ho chieu
30 trieu » 25 trieu
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho trieu) OR (30 trieu)) tinh - ((thanh trung) OR (thanh tung)) cua thong thong dan toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho trieu) OR (30 trieu)) tinh - ((thanh trung) or (thanh tung)) cua thong thong dan toan ban~".
• Adding a wildcard symbol may retrieve word variants: ((ho trieu) OR (30 trieu)) tinh - ((thanh trung) or (thanh tung)) cua thong thong dan toan ban*.