Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
luat duong » xuat duong, luat huong, luat thuong
duong cong » dung cong, luong cong, duong trong
chi sach » chinh sach, chieu sach, co sach
san toan » van toan, manh toan, xuan toan
dan toan » van toan, dan than, manh toan
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi sach - hanh trinh luat duong cong ((san toan) or (dan toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sach - hanh trinh luat duong cong ((san toan) OR (dan toan)) cau.
• Adding a wildcard symbol may retrieve word variants: doi chi sach - hanh trinh luat duong cong ((san toan) or (dan toan)) cau*.