Perhaps you should try some spelling variations:
chuong dong » chuong duong, phuong dong, huong dong
thuong dong » phuong dong, tuong dong, huong dong
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
thanh dung » thanh duong, thanh tung, thanh hung
hanh dung » anh dung, hanh dong, manh dung
tinh van » trinh van, dinh van, tinh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - ((hanh dung) OR (thanh dung)) luat ((thuong dong) or (chuong dong)) tinh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - ((hanh dung) OR (thanh dung)) luat ((thuong dong) OR (chuong dong)) tinh van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - ((hanh dung) OR (thanh dung)) luat ((thuong dong) or (chuong dong)) tinh van ban".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((hanh dung) OR (thanh dung)) luat ((thuong dong) or (chuong dong)) tinh van ban*.