Perhaps you should try some spelling variations:
hieu ve » hieu va, hieu van
cac luc » cau luc, coc luc, cac nuoc
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
cua tre » cua te, cuu tre, cua triet
te cac » tu cac, te cao, de cac
ve cac » va cac, vien cac
di cua » dai cua, doi cua, de cua
x hoi » o hoi, x ho, 5 hoi

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 nang ((x hoi) OR (xa hoi)). hieu ve cac luc ((va danh) or (va hanh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ky nang ((x hoi) OR (xa hoi)). hieu ve cac luc ((va danh) OR (va hanh)) di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cac ky nang ((x hoi) OR (xa hoi)). hieu ve cac luc ((va danh) or (va hanh)) di cua tre".
• Adding a wildcard symbol may retrieve word variants: te cac ky nang ((x hoi) OR (xa hoi)). hieu ve cac luc ((va danh) or (va hanh)) di cua tre*.