Perhaps you should try some spelling variations:
thien van » thi van
ban thanh » ban hanh, ban hang
toc sach » hoc sach, doc sach, thuoc sach
hai thuc » thai thuc, dai thuc, ha thuc
thuc ban » thuoc ban, thuc dan, thu ban
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
van hai » van ha, van chat, van hanh
tai cua » thai cua, tai cuc, hai cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty nang xa hoi. thien van hai thuc ban thanh ((((tai cua) or (dai cua))) or (tri cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang xa hoi. thien van hai thuc ban thanh ((((tai cua) OR (dai cua))) OR (tri cua)) te.
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang xa hoi. thien van hai thuc ban thanh ((((tai cua) or (dai cua))) or (tri cua)) te*.