Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
phuong van » phung van, phong van, phuong lan
doi chieu » doc hieu, doi chi, ho chieu
mang cua » manh cua, dung cua, cong cua
van toan » van tuan, van tan, van thanh
toan ban » van ban
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - hanh ((mang cua) OR (ban cua)) bang phuong van toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh ((mang cua) OR (ban cua)) bang phuong van toan ban".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh ((mang cua) OR (ban cua)) bang phuong van toan ban*.