Perhaps you should try some spelling variations:
ban hanh » ban hang
van hanh » van thanh, van anh, van ban
cua tre » cua te, cuu tre, cua triet
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
lang xa » dang xay, lang van
lang ha » long ha
ve cac » va cac, vien cac
vi cua » vai cua, di cua
tu van » tu va

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

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