Perhaps you should try some spelling variations:
vu thanh » su thanh, vu khanh, cuu thanh
cua tre » cuu tre, cua triet, dua tren
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
cac duc » cac du, cao duc, cac dac
hieu ve » hieu va, hieu van
van hoi » van hoa, van hoc, van hoe
ky danh » ky anh
ky dang » ky nang
ve cac » va cac, vien cac
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: vu thanh ((ky dang) or (ky danh)) van hoi. hieu ve cac duc va hanh va ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu thanh ((ky dang) OR (ky danh)) van hoi. hieu ve cac duc va hanh va ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: vu thanh ((ky dang) or (ky danh)) van hoi. hieu ve cac duc va hanh va ((cua tre) or (cua te))*.