Perhaps you should try some spelling variations:
thanh va » thanh van, hanh va, thanh ha
toc sach » hoc sach, doc sach, thuoc sach
nam van » nam dan, nam va, pham van
dam van » dao van, pham van, dang van
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, 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 hoi. hieu ve phan ((dam van) OR (nam 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 hoi. hieu ve phan ((dam van) OR (nam 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 hoi. hieu ve phan ((dam van) OR (nam van)) thanh va cua te*".