Perhaps you should try some spelling variations:
khanh ly » khanh duy, thanh lay, hanh ky
toc sach » hoc sach, doc sach, thuoc sach
va khanh » van khanh, va thanh, vu khanh
cham luc » cham soc, nhan luc, cham cuu
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
dai hoi » dai hoc, dai hai, dai moi
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va, loc va
y nang » ky nang, ly nang, v nang
ly cua » le cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) OR (toc sach)) y nang ((xa hoi) or (dai hoi)). hieu ve cham luc va khanh ly cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) y nang ((xa hoi) OR (dai hoi)). hieu ve cham luc va khanh ly cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) y nang ((xa hoi) or (dai hoi)). hieu ve cham luc va khanh ly cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) y nang ((xa hoi) or (dai hoi)). hieu ve cham luc va khanh ly cua tre*.