Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
cua tre » cua te, cua triet, dua tren
truc va » thuc va, thuc vat, trung va
cuu tre » cau tren, cau treo
sach ky » sac ky, sach y, sach ty
va cham » va chat, va tham
nang xa » nang x, lang xa, nang ma
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 cham) or (va cao)) truc va thanh dai ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang xa hoi. hieu ((va cham) OR (va cao)) truc va thanh dai ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang xa hoi. hieu ((va cham) or (va cao)) truc va thanh dai ((cua tre) OR (cuu tre))*".