Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh doi » thanh doi, hanh noi, hang doi
ban hanh » ban hang
chat xuc » chat huu, cam xuc, chao xu
ty hang » ly hang, ty xang, thi hang
cho hoc » co hoc, khoa hoc
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
xuc ban » duc ban, cuc ban, quoc ban
ty nang » ky nang, ty xang, ly nang
doi cua » dai cua, hoi cua
cua cau » cua cac, cua chu, cua cay

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: toc sach ((ty nang) OR (ty hang)) cho hoc. hieu ve chat xuc ban hanh doi cua cau~.
• Adding a wildcard symbol may retrieve word variants: toc sach ((ty nang) or (ty hang)) cho hoc. hieu ve chat xuc ban hanh doi cua cau*.