Perhaps you should try some spelling variations:
thanh than » thanh thanh, thanh thang, thanh toan
van thanh » ban thanh, van tuan
than cua » nhan cua, thai cua, ban cua
hieu van » hieu va, thien van, lieu va
su sach » vu sach
xuc van » duc van, luc van, vuc van
van bac » van ban, van bao, van hac
so sach » so sanh, bo sach, co sach
cua tre » cua te, cuu tre, cua triet
ang xa » lang xa, mang xa, dang xay

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) OR (so sach)) ty ((ang xa) or (mang may)) hoi. hieu van bac xuc van thanh than cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ty ((ang xa) OR (mang may)) hoi. hieu van bac xuc van thanh than cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ty ((ang xa) or (mang may)) hoi. hieu van bac xuc van thanh than cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ty ((ang xa) or (mang may)) hoi. hieu van bac xuc van thanh than cua tre*.