Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung dung » phuong dung, ung dung, thong dung
dung manh » duong manh, dung danh, hung manh
30 trieu » 25 trieu
trung va » truong va, trang va, trung ha
toan cao » toan tap
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: 30 trieu tinh - thanh trung va nhung dung manh ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: 30 trieu tinh - thanh trung va nhung dung manh ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: 30 trieu tinh - thanh trung va nhung dung manh ((toan cao) or (toan ban))*.