Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
cac xuc » cam xuc, cac nuoc, chat xuc
va dinh » van dinh, va kinh, va tinh
hieu ve » hieu va, hieu van
te cua » tue cua, le cua
de cua » le cua, dieu cua
xuc va » duc va, tuc va, luc va
ve cac » va cac, vien cac
v nang » va nang, vu nang, van nang
sach v » sach va, sach y, sach 2
o hoi » co hoi, o hoc, o hai
x hoi » xa hoi, x ho, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach v nang ((x hoi) OR (o hoi)). hieu ve cac xuc va dinh ((de cua) or (te cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach v nang ((x hoi) OR (o hoi)). hieu ve cac xuc va dinh ((de cua) OR (te cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach v nang ((x hoi) OR (o hoi)). hieu ve cac xuc va dinh ((de cua) or (te cua)) te".
• Adding a wildcard symbol may retrieve word variants: vu sach v nang ((x hoi) OR (o hoi)). hieu ve cac xuc va dinh ((de cua) or (te cua)) te*.