Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
hanh doi » thanh doi, hanh noi, hang doi
ty nang » ty xang, ty hang, ly nang
cho hoc » co hoc, khoa hoc
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
doi cua » dai cua, hoi cua
cua cau » cua cac, cua chu, cua cay
ve cac » va cac, vien cac

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((ty nang) OR (ky nang)) cho hoc. hieu ve cac xuc van hanh doi cua cau~".
• Adding a wildcard symbol may retrieve word variants: toc sach ((ty nang) OR (ky nang)) cho hoc. hieu ve cac xuc van hanh doi cua cau*.