Perhaps you should try some spelling variations:
can thuc » dan thuc, van thuc, cay thuc
va thanh » gia thanh, ban thanh, le thanh
bach ky » bac ky
hieu va » lieu va, hieu qua
va tinh » may tinh
tay cua » day cua, ty cua
cua tre » cua te, cuu tre, cua triet
nang o » nang co, nang ho, nang ro
va can » va chan, va cac, va cao
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: vu bach ky nang o hoi. hieu va can thuc ((va thanh) OR (va tinh)) tay cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu bach ky nang o hoi. hieu va can thuc ((va thanh) OR (va tinh)) tay cua tre".
• Adding a wildcard symbol may retrieve word variants: vu bach ky nang o hoi. hieu va can thuc ((va thanh) OR (va tinh)) tay cua tre*.