Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh dung » thanh dung, anh dung, hanh dong
bang cong » dang cong, bang song, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
dung cua » dung luan, dung cho
cua bang » chua bang, cua ban, cua dang
tap quan » tac quan, hai quan

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 cua bang cong ((tap quan) or (((bai toan) OR (bai tap)))) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh dung cua bang cong ((tap quan) OR (((bai toan) OR (bai tap)))) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh dung cua bang cong ((tap quan) or (((bai toan) OR (bai tap)))) cau*".