Perhaps you should try some spelling variations:
va hanh » van hanh, va thanh, va danh
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
hai cua » thai cua, dai cua, hoi cua
cac toc » cac toi, cac nuoc, cac thoi
vai cua » dai cua, lai cua, bai cua
cac tac » cac bac, cac dac, cac tai
tu can » tu ban, tu cac, thu canh
can ky » van ky, dan ky, ban ky

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

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