Perhaps you should try some spelling variations:
cay phoi » cap phoi, tay hoi, cay cho
vien cac » vien bach, vien dai, vien da
cua tre » cua te, cuu tre, cua triet
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
vi cua » vai cua, di cua
xuc va » duc va, tuc va, luc va
san ky » sang ky, van ky, ban ky
va cay » va cac, va cao, va cai
dan ky » van ky
ve cac » va cac

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

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