Perhaps you should try some spelling variations:
nhanh dien » nhan dien, nganh dien, nhan vien
toc sach » hoc sach, doc sach, thuoc sach
dien cua » dieu cua, dien cuc, dien cu
va nhanh » va thanh, va hanh, va nhan
cao duc » dao duc, cao suc, giao duc
cau duc » cau luc, chu duc, cau truc
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
o hoc » co hoc, mo hoc, so hoc
o hoi » co hoi, o hai, o hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty nang ((o hoi) or (o hoc)). hieu ve ((cau duc) or (cao duc)) va nhanh dien cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang ((o hoi) OR (o hoc)). hieu ve ((cau duc) OR (cao duc)) va nhanh dien cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang ((o hoi) or (o hoc)). hieu ve ((cau duc) or (cao duc)) va nhanh dien cua tre*.