Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
vu sach » vu bach, su sach, vu khach
hanh va » hang va, hanh vi
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
truc va » thuc va, thuc vat, trung va
cua tu » cua tuc, cua su, cua cu
xuc va » duc va, tuc va, luc va

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: vu sach ty nang xa hoi. hieu van nam ((xuc va) OR (truc va)) hanh va ((cua te) OR (cua tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty nang xa hoi. hieu van nam ((xuc va) or (truc va)) hanh va ((cua te) OR (cua tu))~".
• Adding a wildcard symbol may retrieve word variants: vu sach ty nang xa hoi. hieu van nam ((xuc va) or (truc va)) hanh va ((cua te) OR (cua tu))*.