Perhaps you should try some spelling variations:
nang lai » nang tai, mang lai, nang cai
te sach » toc sach
hanh ca » hanh cac, hanh cat, hanh cua
va hanh » van hanh, va thanh, va danh
cac duc » cac du, cao duc, cac dac
hieu va » lieu va
lai hoi » dai hoi, lai hoa, lai roi
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
ca cua » co 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 (su sach)) ky nang lai hoi. ((hieu va) or (hieu qua)) cac duc va hanh ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (su sach)) ky nang lai hoi. ((hieu va) OR (hieu qua)) cac duc va hanh ca cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (su sach)) ky nang lai hoi. ((hieu va) or (hieu qua)) cac duc va hanh ca cua tre*.