Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhan tuong » nhan trong, nhan thong, nhan tong
doi chieu » doc hieu, doi chi, ho chieu
trang cua » tranh cua, tang cua, trung cua
mang cua » manh cua, dung cua, ban cua
van toan » van tuan, van thanh, manh toan
van tan » van tuan, van ban, van tai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh ((trang cua) OR (mang cua)) nhan tuong ((van toan) OR (van tan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh ((trang cua) or (mang cua)) nhan tuong ((van toan) OR (van tan)) cau~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh ((trang cua) or (mang cua)) nhan tuong ((van toan) OR (van tan)) cau*.