Perhaps you should try some spelling variations:
thien va » thien van, tien va, thien tai
hanh lai » hanh lam, hanh tai, thanh lap
va cham » va chat, va tham
lai cua » dai cua, hai cua, lai chau
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
doc hai » hoc hai, duc hai, do hai
doc hoi » duoc hoi, hoc hoi, doi hoi
cua tre » cua te, cuu tre, cua triet
xuc va » tuc va, luc va, xac va

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 ky nang ((doc hoi) OR (doc hai)). thien va cham ((xuc va) or (duc va)) hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((doc hoi) OR (doc hai)). thien va cham ((xuc va) OR (duc va)) hanh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ((doc hoi) OR (doc hai)). thien va cham ((xuc va) or (duc va)) hanh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((doc hoi) OR (doc hai)). thien va cham ((xuc va) or (duc va)) hanh lai cua tre*.