Perhaps you should try some spelling variations:
thanh vi » thanh va, thanh ve, nhanh vi
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
van lam » van nam
van cam » van nam, van cau, van dam
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

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 ky lang xa hoi. hieu ((van cam) or (van lam)) xuc va ((thanh vi) OR (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky lang xa hoi. hieu ((van cam) OR (van lam)) xuc va ((thanh vi) OR (hanh vi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky lang xa hoi. hieu ((van cam) or (van lam)) xuc va ((thanh vi) OR (hanh vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ky lang xa hoi. hieu ((van cam) or (van lam)) xuc va ((thanh vi) OR (hanh vi)) cua tre*.