Perhaps you should try some spelling variations:
thong trong » thuong trong, thong thong, thong thuong
thanh trung » thanh tung
trung toan » truong toan, trung tuan, trung tran
trong san » trong cac, cong san, dong san
ho trieu » mot trieu, 25 trieu, ho chieu
30 trieu » 25 trieu
san than » sang than, san thanh, ban than
than cau » toan cau, phan cau, than cap

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 - thanh trung toan thong trong san than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho trieu) OR (30 trieu)) tinh - thanh trung toan thong trong san than cau.
• Adding a wildcard symbol may retrieve word variants: ((ho trieu) or (30 trieu)) tinh - thanh trung toan thong trong san than cau*.