Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
phan dam » phan dau, phan cam, phan dai
toc sach » hoc sach, doc sach, thuoc sach
thanh va » thanh van, hanh va, thanh ha
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
dam van » dao van, nam van, pham van
hieu ve » hieu va, hieu van
ve phan » va phan, ke phan, ve phat
va cua » va chua, via cua, ca cua
cua te » cua tu

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