Perhaps you should try some spelling variations:
thien van » thi van
ban thanh » ban hanh, ban hang
van thai » van thoai, van tai, van hai
thanh ve » hanh ve, thanh va, thanh vien
thai tuc » thai thuc, thai thuy, thai hoc
cua tre » cua te, cuu tre, cua triet
tuc ban » thuc ban, truc ban, tu ban
bo sach » co sach, hoc sach
sach lo » sach dao, sach doi, sach hoi
nang xa » lang xa, nang ma, mang xa
ca tren » cau tren, cu tren, la tren

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach lo ((nang xa) OR (nang x)) hoi. thien van thai tuc ban thanh ve ((cua tre) or (ca tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach lo ((nang xa) OR (nang x)) hoi. thien van thai tuc ban thanh ve ((cua tre) OR (ca tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo sach lo ((nang xa) OR (nang x)) hoi. thien van thai tuc ban thanh ve ((cua tre) or (ca tren))".
• Adding a wildcard symbol may retrieve word variants: bo sach lo ((nang xa) OR (nang x)) hoi. thien van thai tuc ban thanh ve ((cua tre) or (ca tren))*.