Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
ve chat » va chat, van chat
ve cham » va cham, vu cham, ve chim
nang xa » nang x, lang xa, nang ma
thai va » thai van
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
va han » va phan, van han, va hanh
tai va » mai va, tri va, dai va
thiet » thieu

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 y nang xa hoi. hieu ((ve cham) OR (ve chat)) tuc va han ((tai va) OR (thai va)) thiet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y nang xa hoi. hieu ((ve cham) or (ve chat)) tuc va han ((tai va) OR (thai va)) thiet~".
• Adding a wildcard symbol may retrieve word variants: vu sach y nang xa hoi. hieu ((ve cham) or (ve chat)) tuc va han ((tai va) OR (thai va)) thiet*.