Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thai cua » than cua, tai cuc, tri cua
ky lang » ky dang, ky tang, tay lang
van cac » van hac, van cau, van bac
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » van hanh, va thanh, va danh
hai cua » dai cua, hoi cua, lai cua
su sai » su tai, su hai, su dai
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ((ky lang) OR (ky nang)) xa hoi. hieu van cac xuc va hanh ((hai cua) or (thai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ((ky lang) OR (ky nang)) xa hoi. hieu van cac xuc va hanh ((hai cua) OR (thai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ((ky lang) OR (ky nang)) xa hoi. hieu van cac xuc va hanh ((hai cua) or (thai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: su sai ((ky lang) OR (ky nang)) xa hoi. hieu van cac xuc va hanh ((hai cua) or (thai cua)) tre*.