Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
cua nhung » va nhung
duong van » duong va, luong va, dang van
song van » hoang van, trong van, dang van
toan cau » toan cao, toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (doi chieu)) xanh - hanh tranh cua nhung ((song van) OR (duong van)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hien) or (doi chieu)) xanh - hanh tranh cua nhung ((song van) OR (duong van)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (doi chieu)) xanh - hanh tranh cua nhung ((song van) OR (duong van)) toan cau*.