Perhaps you should try some spelling variations:
thanh trinh » thanh tinh, thanh binh, thanh trung
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, ho chieu, mot chieu
trong van » trong cac
van dung » van dong, xay dung, tin dung
van toan » van tuan, van tan, van thanh
toan cau » toan cao, toan ban, toan tap
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) OR (doi chi)) xanh - ((thanh trinh) or (hanh trinh)) van dung trong van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) xanh - ((thanh trinh) OR (hanh trinh)) van dung trong van toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doi chi)) xanh - ((thanh trinh) or (hanh trinh)) van dung trong van toan cau".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doi chi)) xanh - ((thanh trinh) or (hanh trinh)) van dung trong van toan cau*.