Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
sach ly » sach y, sach lo, sach ty
lai cua » dai cua, hai cua, lai chau
duoc va » nuoc va, duc va, duoc ma
tuoc va » thuoc va, nuoc va, tuc va
tu sach » thu sach, su sach, te sach
ve bach » ve cach, vu bach, vi bach
hieu ve » hieu va, hieu van
ly nang » ky nang, ly hang, ly vang
cua tre » cua te, cuu tre, cua triet
x hoi » xa hoi, o hoi, 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: tu sach ly nang ((x hoi) or (x ho)). hieu ve bach ((tuoc va) or (duoc va)) hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly nang ((x hoi) OR (x ho)). hieu ve bach ((tuoc va) OR (duoc va)) hanh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ly nang ((x hoi) or (x ho)). hieu ve bach ((tuoc va) or (duoc va)) hanh lai cua tre*.