Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
cong luong » cong thuong, nang luong, cong dong
tranh cua » doanh cua, manh cua
cong lang » cong vang, cong quang, cong ngang
hoc dieu » hoc thieu
cua dung » cua dang, cua dong, qua dung
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 dieu) OR (hoc hien)) xanh - hanh tranh cua dung ((cong lang) OR (cong luong)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc dieu) or (hoc hien)) xanh - hanh tranh cua dung ((cong lang) OR (cong luong)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: ((hoc dieu) or (hoc hien)) xanh - hanh tranh cua dung ((cong lang) OR (cong luong)) toan cau*.