Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
danh doi » danh di, thanh doi, dung doi
va triet » va thiet, va trien, ve triet
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, va hanh
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
cam tu » cam thu, nam tu, dam tu
doi va » hoi va, noi va, dai va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky nang xa hoi. ((hieu van) or (hieu qua)) cam tu va danh doi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang xa hoi. ((hieu van) OR (hieu qua)) cam tu va danh doi va triet.
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang xa hoi. ((hieu van) or (hieu qua)) cam tu va danh doi va triet*.