Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
sach cao » sach dao, sach cap, mach cao
cao tang » cao dang
vu sach » vu bach, su sach, vu khach
tang xa » trang xa, tang ma, lang xa
xuc gia » duc gia, luc gia, tuc gia
van cua » vang cua, ban cua, dan cua
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach cao tang xa hoi. hieu ((van nam) or (van lam)) xuc gia thanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach cao tang xa hoi. hieu ((van nam) OR (van lam)) xuc gia thanh van cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sach cao tang xa hoi. hieu ((van nam) or (van lam)) xuc gia thanh van cua tre*.