Perhaps you should try some spelling variations:
toc sach » hoc sach, thuoc sach, nuoc sach
van tuan » van quan, van ban, anh tuan
doc sach » hoc sach, nuoc sach, dac sac
cham tuc » nham thuc, pham thuc, tham thuc
tuan di » tuan do, truan doi, quan doi
tuc van » thuc van, truc van, tuc va
va cham » va chat, va tham
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
di cua » dai cua, doi cua, de cua

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: ((te sach) OR (((toc sach) OR (doc sach)))) ty nang xa hoi. lieu va cham tuc van tuan di cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (((toc sach) OR (doc sach)))) ty nang xa hoi. lieu va cham tuc van tuan di cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (((toc sach) OR (doc sach)))) ty nang xa hoi. lieu va cham tuc van tuan di cua tre*.