Perhaps you should try some spelling variations:
cham cuu » cap cuu
toan van » tran van, toan ban, tan van
van toan » van tuan, van tan, van thanh
dang xay » dang van, van xay
chat cua » nhat cua, chat va, chat huu
tu sach » thu sach, su sach, te sach
van cua » vang cua, ban cua, dan cua
sach lo » sach dao, sach doi, sach hoi
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
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: tu sach lo ((nang xa) or (dang xay)) hoi. hieu ve ((cham cuu) OR (chat cua)) van toan van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach lo ((nang xa) OR (dang xay)) hoi. hieu ve ((cham cuu) OR (chat cua)) van toan van cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach lo ((nang xa) or (dang xay)) hoi. hieu ve ((cham cuu) OR (chat cua)) van toan van cua tre*".