Perhaps you should try some spelling variations:
phuong duong » phuong dung, chuong duong, phuong dong
cua phuong » cuu phuong, cuc phuong, luan phuong
hanh tranh » canh tranh, hanh trinh, hanh trang
sinh sach » sinh san, sang sach, sinh danh
tranh cua » doanh cua, manh cua
duong dan » duong dang, huong dan, duong van
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((sinh sach) or (chinh sach)) - hanh tranh cua phuong duong dan ((toan ban) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((sinh sach) OR (chinh sach)) - hanh tranh cua phuong duong dan ((toan ban) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc ((sinh sach) or (chinh sach)) - hanh tranh cua phuong duong dan ((toan ban) or (toan tap))*.