Perhaps you should try some spelling variations:
te sach » toc sach
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
luu tre » luu tru, cuu tre, luy tre
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va
va don » va dong, va doc, va do
vi luu » vi lua
x hoi » xa hoi, x ho
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang ((((x hoi) or (5 hoi))) or (o hoi)). hieu ve cac xuc va don vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((((x hoi) OR (5 hoi))) OR (o hoi)). hieu ve cac xuc va don vi luu tre.
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((((x hoi) or (5 hoi))) or (o hoi)). hieu ve cac xuc va don vi luu tre*.