Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
di cua » dai cua, doi cua, do cua
de cua » le cua, te cua, dieu 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 vu cham ((xuc va) or (tuc xa)) hanh ((di cua) OR (de cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu vu cham ((xuc va) OR (tuc xa)) hanh ((di cua) OR (de cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu vu cham ((xuc va) or (tuc xa)) hanh ((di cua) OR (de cua)) te".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu vu cham ((xuc va) or (tuc xa)) hanh ((di cua) OR (de cua)) te*.