Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hoc sach » hoc sinh, hoc cac, hoc anh
thanh va » thanh van, hanh va, thanh ha
lang xa » lang ha, dang xay, lang van
va cham » va chat, va tham
duc ban » duc tan, duc van, dua ban
y lang » o lang, _ lang, tay lang
va cua » va chua, via cua, ca cua
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach y lang xa hoi. hieu ((va cac) or (va cham)) duc ban thanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach y lang xa hoi. hieu ((va cac) OR (va cham)) duc ban thanh va cua te.
• Adding a wildcard symbol may retrieve word variants: hoc sach y lang xa hoi. hieu ((va cac) or (va cham)) duc ban thanh va cua te*.