Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
toc sach » hoc sach, doc sach, thuoc sach
thanh vi » hanh vi, thanh va, thanh ve
duc van » duc va, duc tan, duc manh
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
ve cao » ve bao, ve cac, ve co
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 lang xa hoi. hieu ((ve cao) or (va cao)) duc van ((thanh vi) or (thanh van)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky lang xa hoi. hieu ((ve cao) OR (va cao)) duc van ((thanh vi) OR (thanh van)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ky lang xa hoi. hieu ((ve cao) or (va cao)) duc van ((thanh vi) or (thanh van)) cuu tre*.