Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
cuc phuong » cac phuong, cuu phuong, cua phuong
phuong ban » phuong bang, phuong lan, phuong bac
doi chieu » doc hieu, doi chi, mot chieu
tung cuc » tong cuc, tung buoc, trung cua
tay toan » tap toan, tam toan, bai toan
toan ban » van ban
ban tay » ban tai, ban than, gian tay

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 - thanh tung cuc phuong ban tay toan ban~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh tung cuc phuong ban tay toan ban*.