Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cham xuc » cam xuc, chat xuc, cham soc
so sach » so sanh, bo sach, co sach
ky dong » ly dong, ky cong, ty dong
ky dang » ky nang, ky danh
hien tu » khien tu, dien tu
tu cham » toc cham, thi cham
xuc ban » duc ban, cuc ban, quoc ban
va cua » va chua, via cua, ca cua
co cua » con cua, ca cua, cong cua

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 ((ky dong) OR (ky dang)) hoa hoc. hien tu cham xuc ban thanh ((va cua) or (co cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((ky dong) OR (ky dang)) hoa hoc. hien tu cham xuc ban thanh ((va cua) OR (co cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((ky dong) OR (ky dang)) hoa hoc. hien tu cham xuc ban thanh ((va cua) or (co cua)) te".
• Adding a wildcard symbol may retrieve word variants: so sach ((ky dong) OR (ky dang)) hoa hoc. hien tu cham xuc ban thanh ((va cua) or (co cua)) te*.