Perhaps you should try some spelling variations:
vanh dai » van dai, vanh tai, lanh dao
cua tre » cua te, cuu tre, cua triet
va vanh » va van, va danh, va hanh
va cham » va chat, va tham
tuc va » thuc va, truc va, tuc xa
sac ky » cac ky
nang o » nang co, nang ho, nang ro
va cam » va cac, va cao, va cai
o hai » co hai, so hai, o lai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (sai ky)) nang o hai. hieu ((va cam) OR (va cham)) tuc va vanh dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sac ky) OR (sai ky)) nang o hai. hieu ((va cam) or (va cham)) tuc va vanh dai cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) OR (sai ky)) nang o hai. hieu ((va cam) or (va cham)) tuc va vanh dai cua tre*.