Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cau thuc » cau truc, cuu thuc, can thuc
thuc van » thuc vat, thuc dan, thuc va
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
van cau » van dau, van hau, van chat
hanh de » hanh ve
cua tre » cua te, cuu tre, cua triet
te cac » tu cac, ve cac, te cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te cac ky lang xa hoi. hieu van cau thuc van ((hanh de) or (hanh kem)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ky lang xa hoi. hieu van cau thuc van ((hanh de) OR (hanh kem)) cua tre.
• Adding a wildcard symbol may retrieve word variants: te cac ky lang xa hoi. hieu van cau thuc van ((hanh de) or (hanh kem)) cua tre*.