Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
hanh noi » ha noi, hanh vi, nang noi
cay phoi » cap phoi, tay hoi, cay cho
hanh doi » thanh doi, hang doi, hanh moi
cua tre » cua te, cuu tre, cua triet
can ky » van ky, dan ky, ban ky
xuc va » duc va, tuc va, luc va
ve cac » va cac
va cay » va cac, va cao, va cai
tu can » tu ban, tu cac, thu canh
ky va » ly va, ke va, my va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu can ky va cay phoi. hieu ((ve cac) or (vien cac)) xuc va ((hanh doi) OR (hanh noi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu can ky va cay phoi. hieu ((ve cac) OR (vien cac)) xuc va ((hanh doi) OR (hanh noi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu can ky va cay phoi. hieu ((ve cac) or (vien cac)) xuc va ((hanh doi) OR (hanh noi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu can ky va cay phoi. hieu ((ve cac) or (vien cac)) xuc va ((hanh doi) OR (hanh noi)) cua tre*.