Perhaps you should try some spelling variations:
phuong manh » phuong anh, phuong hanh, phuong thanh
phuong danh » phuong anh, phuong dinh, phuong hanh
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
phung manh » hung manh, nhung manh, phung minh
hanh ban » thanh ban, hang ban, hanh san
cua dung » cua dang, cua dong, qua dung
toan cau » toan cao, toan ban, toan tap
ban cua » ban quan

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: theo chieu sach - hanh ban cua dung ((((phuong manh) OR (phuong danh))) OR (phung manh)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh ban cua dung ((((phuong manh) OR (phuong danh))) or (phung manh)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh ban cua dung ((((phuong manh) OR (phuong danh))) or (phung manh)) toan cau*.