Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
dong khoa » duong khoa, dung khoa, dong hoa
khien tu » dien tu
thanh va » thanh van, hanh va, thanh ha
cham xuc » cam xuc, chat xuc, cham soc
khoa hoi » khoan hoi, khoa hoc, khoa doi
xuc ban » duc ban, cuc ban, quoc ban
tu cham » toc cham, thi cham
so sach » so sanh, co sach, hoc sach
ky dong » ly dong, ky dang, ky cong
bo sach » co sach, hoc sach
va cua » va chua, via cua, ca cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) OR (bo sach)) ky dong khoa hoi. khien tu cham xuc ban thanh va cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (bo sach)) ky dong khoa hoi. khien tu cham xuc ban thanh va cua te".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (bo sach)) ky dong khoa hoi. khien tu cham xuc ban thanh va cua te*.