Perhaps you should try some spelling variations:
luat phuong » luat thuong, luan phuong, xuat phuong
phuong dung » thong dung, cuong dung, phuong hoang
hanh trinh » canh tranh, hanh chinh
hoc chinh » hoan chinh, hoc sinh, hoc kinh
dung manh » duong manh, dung danh, hung manh
toan cao » toan tap
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 chinh sach - hanh trinh luat phuong dung manh ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - hanh trinh luat phuong dung manh ((toan cao) OR (toan ban))*.