Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
luan nhung » luan chung, luan hung, quan nhung
hanh dung » thanh dung, hanh dong, manh dung
ho chieu » theo chieu, hoc thieu, doi chieu
anh dung » anh dong, anh huong, sach dung
cong van » cong vang, song van, cong tan
cong san » cong tac
toan tap » toan 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 chieu sach - ((hanh dung) OR (anh dung)) luan nhung ((cong van) OR (cong san)) toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((hanh dung) OR (anh dung)) luan nhung ((cong van) OR (cong san)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((hanh dung) OR (anh dung)) luan nhung ((cong van) OR (cong san)) toan tap*.