Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
phan dau » phan tu, hang dau
toc sach » hoc sach, doc sach, thuoc sach
dau van » dao van, dam van, dau va
ve phan » va phan, ke phan, ve phat
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
va cua » va chua, via cua, ma cua
ca cua » co cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (toc sach)) ky nang xa hoi. hieu ve phan dau van thanh ((va cua) OR (ca cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky nang xa hoi. hieu ve phan dau van thanh ((va cua) OR (ca cua)) te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) ky nang xa hoi. hieu ve phan dau van thanh ((va cua) OR (ca cua)) te*".