Perhaps you should try some spelling variations:
phuong danh » phuong anh, phuong dinh, phuong hanh
phuong dan » phuong doan, huong dan, phuong lan
hien xanh » hien hanh, hien nhanh, chieu xanh
quang cua » quang tuan, quang huy, dung cua
quan cua » quan luan, ban cua, gian cua
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 xanh - nhanh ((quang cua) OR (quan cua)) chu ((phuong dan) OR (phuong danh)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - nhanh ((quang cua) or (quan cua)) chu ((phuong dan) OR (phuong danh)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - nhanh ((quang cua) or (quan cua)) chu ((phuong dan) OR (phuong danh)) toan cau*.