Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trinh quan » tinh quang, trinh luat
hanh luong » hang luong, thanh huong, thanh cuong
doi chieu » doc hieu, doi chi, ho chieu
luong dan » huong dan, luong dao, luong van
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh ((trinh quan) OR (trinh han)) hanh luong dan toan ban~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh ((trinh quan) OR (trinh han)) hanh luong dan toan ban*.