Perhaps you should try some spelling variations:
moi nganh » khoi nganh, hoc nganh, moi ngay
van hanh » van thanh, ban hanh, van anh
ky tang » ky dang, kho tang, ky trong
hieu ve » hieu va, hieu van
cac duc » cac du, cao duc, cac dac
va hanh » va thanh, va danh, ban hanh
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: moi nganh ((ky tang) or (ky nang)) xa hoi. hieu ve cac duc ((va hanh) or (van hanh)) hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: moi nganh ((ky tang) OR (ky nang)) xa hoi. hieu ve cac duc ((va hanh) OR (van hanh)) hai cua tre.
• Adding a wildcard symbol may retrieve word variants: moi nganh ((ky tang) or (ky nang)) xa hoi. hieu ve cac duc ((va hanh) or (van hanh)) hai cua tre*.