Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
tuc van » thuc van, truc van, tuc va
hai cua » thai cua, dai cua, hoi cua
lai cua » dai cua, lai chau, thai cua
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 van cam tuc van hanh ((hai cua) or (lai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu can ky nang xa hoi. hieu van cam tuc van hanh ((hai cua) OR (lai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: tu can ky nang xa hoi. hieu van cam tuc van hanh ((hai cua) or (lai cua)) tre*.