Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
te sach » toc sach
van cam » van nam, van lam, van cau
hanh va » hang va, hanh vi
va chua » vua chua, ca chua, va chu
chua te » cua te, chua tu, chua xe
y nang » ky nang, ly nang, v nang
xuc va » tuc va, luc va, xac va
x hoi » o 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: te sach y nang ((x hoi) or (xa hoi)). hieu van cam ((xuc va) or (duc va)) hanh va chua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((x hoi) OR (xa hoi)). hieu van cam ((xuc va) OR (duc va)) hanh va chua te.
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((x hoi) or (xa hoi)). hieu van cam ((xuc va) or (duc va)) hanh va chua te*.