Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hieu va » lieu va, hieu qua
va hanh » va thanh, va danh, ban hanh
cua tre » cuu tre, cua triet, dua tren
vu dan » vu dang, va dan, cu dan
dan ky » van ky
va cam » va cham, va cac, va cao
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu dan ky nang x hoi. hieu va cam xuc ((va hanh) or (van hanh)) vi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu dan ky nang x hoi. hieu va cam xuc ((va hanh) OR (van hanh)) vi ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: vu dan ky nang x hoi. hieu va cam xuc ((va hanh) or (van hanh)) vi ((cua tre) or (cua te))*.