Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
luat nhung » luat thuong, thuat nhung, cua nhung
luat chung » luan chung, luat thuong, cua chung
chong phap » phuong phap
hieu manh » chieu xanh, hieu nganh, dieu hanh
phap toan » phap hoan, phap luan, phap phan
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: ho ((hieu manh) or (chieu sach)) - canh tranh ((luat nhung) OR (luat chung)) chong phap toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu sach)) - canh tranh ((luat nhung) OR (luat chung)) chong phap toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu manh) or (chieu sach)) - canh tranh ((luat nhung) OR (luat chung)) chong phap toan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sach)) - canh tranh ((luat nhung) OR (luat chung)) chong phap toan ban*.