Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
cam vuc » cam xuc
vuc van » duc van, luc van, thuc van
y nang » ky nang, ly nang, v nang
cua tu » cua tuc, cua su, cua te
cua cu » cua chu, cua cau, cua su

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

• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y nang xa hoi. ((hieu ve) OR (hieu van)) cam vuc van hanh vi ((cua tu) OR (cua cu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y nang xa hoi. ((hieu ve) OR (hieu van)) cam vuc van hanh vi ((cua tu) or (cua cu))~".
• Adding a wildcard symbol may retrieve word variants: toc sach y nang xa hoi. ((hieu ve) OR (hieu van)) cam vuc van hanh vi ((cua tu) or (cua cu))*.