Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh dai » hanh tai, hanh dao, vanh dai
mai hoi » mai khoi, dai hoi, lai hoi
va hanh » van hanh, va thanh, va danh
lam tuc » lam thuoc, lam truoc, luat tuc
van lam » van nam
cua tre » cua te, cuu tre, cua triet
sach ky » sach y, sach ty, sach kem
ma hoi » xa hoi, ma hoa, me hoi
sac ky » cac ky, sai ky
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) or (sac ky)) dang ((ma hoi) or (mai hoi)). hieu van lam tuc va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) dang ((ma hoi) OR (mai hoi)). hieu van lam tuc va hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sac ky)) dang ((ma hoi) or (mai hoi)). hieu van lam tuc va hanh dai cua tre*.