Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh hoai
thanh do » thanh de, thanh pho, thanh hoa
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
qua cau » quan cau, qua cac, qua ca
cau luc » cau truc, cau phuc
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
ma hoi » mai hoi, xa hoi, ma hoa
luc va » duc va, tuc va, loc va

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 v nang ma hoi. hieu qua cau luc va ((thanh doi) or (thanh do)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang ma hoi. hieu qua cau luc va ((thanh doi) OR (thanh do)) cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach v nang ma hoi. hieu qua cau luc va ((thanh doi) or (thanh do)) cua tre*.