Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
qua ban » cua ban, qua quan
vai cua » dai cua, hai cua, lai cua
dua ban » cua ban, mua ban, duc ban
van lam » van nam
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang

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 v nang ma hoa. hieu van lam ((((dua ban) OR (dia ban))) or (qua ban)) thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v nang ma hoa. hieu van lam ((((dua ban) OR (dia ban))) OR (qua ban)) thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v nang ma hoa. hieu van lam ((((dua ban) OR (dia ban))) or (qua ban)) thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach v nang ma hoa. hieu van lam ((((dua ban) OR (dia ban))) or (qua ban)) thanh vai cua tre*.