Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
hanh trang » thanh trung, canh tranh, hanh trinh
thong cong » trong cong, tong cong, thong thong
ho trieu » mot trieu, 25 trieu, ho chieu
30 trieu » 25 trieu
trang va » tran van, hang va
van toan » van tuan, van tan, van thanh
toan cau » 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: ((ho trieu) or (30 trieu)) tinh - hanh trang va ((nhung cong) OR (thong cong)) van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho trieu) OR (30 trieu)) tinh - hanh trang va ((nhung cong) OR (thong cong)) van toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho trieu) or (30 trieu)) tinh - hanh trang va ((nhung cong) OR (thong cong)) van toan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho trieu) or (30 trieu)) tinh - hanh trang va ((nhung cong) OR (thong cong)) van toan cau*.