Perhaps you should try some spelling variations:
sach van » sach han, sach va, bach van
van nang » van quang, van ban, van dong
truc van » truc va, thuc van, truc ban
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
van anh » van thanh, tuan anh, van minh
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
nang o » nang co, nang ho, nang ro
ve cau » ke cau, va cau, ve cac
anh de » hanh de, anh d, anh ve
o hoi » co hoi, o hoc, o hai

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 van nang o hoi. hieu ve cau truc van anh de ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach van nang o hoi. hieu ve cau truc van anh de ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: su sach van nang o hoi. hieu ve cau truc van anh de ((cua tre) or (cuu tre))*.