Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
qua dau » qua da, qua bau, qua dan
xuc van » duc van, luc van, vuc van
xuc ban » duc ban, cuc ban, quoc ban
y nang » ky nang, ly nang, v nang
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang xa hoi. hieu qua dau ((xuc van) or (xuc ban)) hanh ((vi cua) or (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu qua dau ((xuc van) OR (xuc ban)) hanh ((vi cua) OR (di cua)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu qua dau ((xuc van) or (xuc ban)) hanh ((vi cua) or (di cua)) tre*.