Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
toc sach » hoc sach, doc sach, thuoc sach
trung va » truong va, trang va, trung ha
va tham » van tham, va cham, va thanh
sach ky » sac ky, sach y, sach ty
truc va » thuc va, thuc vat
nang xa » nang x, lang xa, nang ma
dai cuu » dai cua, dai huu
cuu tre » cua tre, cau tren, cau treo
va cao » va cac, va co, va dao

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 ky nang xa hoi. hieu ((va tham) or (va cao)) ((truc va) OR (trung va)) thanh dai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang xa hoi. hieu ((va tham) OR (va cao)) ((truc va) OR (trung va)) thanh dai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang xa hoi. hieu ((va tham) or (va cao)) ((truc va) OR (trung va)) thanh dai cuu tre*".