Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
toc sach » hoc sach, doc sach, thuoc sach
nang ma » tang ma, sang ma, nang cao
truc va » thuc va, thuc vat, trung va
cua te » cua tu
tuc va » thuc va, tuc xa, duc va
sach v » sach va, sach y, sach 2
va cam » va cham, va cao, va cai
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: toc sach v nang ma hoa. hieu ((va cam) or (va cac)) ((tuc va) or (truc va)) thanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach v nang ma hoa. hieu ((va cam) OR (va cac)) ((tuc va) OR (truc va)) thanh dai cua te.
• Adding a wildcard symbol may retrieve word variants: toc sach v nang ma hoa. hieu ((va cam) or (va cac)) ((tuc va) or (truc va)) thanh dai cua te*.