Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, nhung don
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
van toan » van tuan, van tan, van thanh
toan cau » toan cao, toan ban, toan tap
ho lieu » so lieu, co lieu, ho chieu
ho kieu » so kieu, thi kieu, ho chieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho lieu) or (ho kieu)) tinh - hanh tranh cua ((nhung cong) OR (hang cong)) van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho lieu) OR (ho kieu)) tinh - hanh tranh cua ((nhung cong) OR (hang cong)) van toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho lieu) or (ho kieu)) tinh - hanh tranh cua ((nhung cong) OR (hang cong)) van toan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho lieu) or (ho kieu)) tinh - hanh tranh cua ((nhung cong) OR (hang cong)) van toan cau*.