Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thien van » thi van
hac truc » hoc truc, hang truc, sach truc
thanh ve » hanh ve, thanh va, thanh vien
truc ban » thuc ban, truc dan, truc van
sach lo » sach dao, sach doi, sach hoi
cuu tre » cua tre, cau tren, cau treo
bo sach » co sach, hoc sach
van hac » van hoc, van ha, van hai
lang xa » lang ha, dang xay, lang van
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 x) or (lang xa)) hoi. thien van hac truc ban thanh ve ((cuu tre) or (ca tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach lo ((nang x) OR (lang xa)) hoi. thien van hac truc ban thanh ve ((cuu tre) OR (ca tren)).
• Adding a wildcard symbol may retrieve word variants: bo sach lo ((nang x) or (lang xa)) hoi. thien van hac truc ban thanh ve ((cuu tre) or (ca tren))*.