Perhaps you should try some spelling variations:
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » van hanh, va thanh, va danh
cua tre » cuu tre, cua triet, dua tren
va xay » va xac
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va
cua te » cua tu

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

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