Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, nhung don
hang cong » dang cong, hang nong, bang cong
30 trieu » 25 trieu
trung va » truong va, trang va, trung ha
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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