Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
van thanh » van tuan
va thanh » gia thanh, va tinh, le thanh
thanh ve » hanh ve, thanh va, thanh vien
su sach » so sach, vu sach
sach tu » sach thu, cach tu, sach ty
tu nano » truc nano
nano xa » nano va, nano bac, nano cau
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu

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 tu nano xa hoi. hieu ((van thanh) or (ban thanh)) duc va thanh ve ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tu nano xa hoi. hieu ((van thanh) OR (ban thanh)) duc va thanh ve ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: su sach tu nano xa hoi. hieu ((van thanh) or (ban thanh)) duc va thanh ve ((cua tre) or (cua te))*.