Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
thanh va » hanh va, thanh ha, thanh ve
vu sach » vu bach, su sach, vu khach
luc ban » duc ban, cuc ban, luc bat
sach ky » sac ky, sach y, sach ty
van cam » van lam, van cau, van dam
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
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 ky lang xa hoi. hieu ((van cam) OR (van nam)) luc ban ((thanh va) OR (thanh van)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky lang xa hoi. hieu ((van cam) or (van nam)) luc ban ((thanh va) OR (thanh van)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: vu sach ky lang xa hoi. hieu ((van cam) or (van nam)) luc ban ((thanh va) OR (thanh van)) cua tre*.