Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
ban thanh » ban hanh, ban hang
van cua » vang cua, ban cua, dan cua
luc ban » duc ban, cuc ban, luc bat
van cau » van dau, van hau, van chat
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
tang ma » mang may, tang van
tang xa » trang xa, lang xa, tang ha
cua tre » cua te, cuu tre, cua triet

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

• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty ((tang xa) OR (tang ma)) hoi. hieu ((van cau) OR (van nam)) luc ban thanh van cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty ((tang xa) OR (tang ma)) hoi. hieu ((van cau) or (van nam)) luc ban thanh van cua tre~".
• Adding a wildcard symbol may retrieve word variants: vu sach ty ((tang xa) OR (tang ma)) hoi. hieu ((van cau) or (van nam)) luc ban thanh van cua tre*.