Perhaps you should try some spelling variations:
thanh phuong » thanh huong, thanh chuong, khanh phong
phuong cham » phuong phap, phuong thao
dung cong » dung trong
chi sach » chinh sach, chieu sach, co sach
dung dat » dung va, dung tai
doi chi » doi khi
van dan » van ban, ban dan, van dao

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 - thanh phuong cham ((dung dat) or (dung cong)) van dan toc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sach - thanh phuong cham ((dung dat) OR (dung cong)) van dan toc*.