Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thu sach » tu sach, thuat sach, thuoc sach
nam xuc » cam xuc, nam xua, nam thuc
lai cua » dai cua, hai cua, lai chau
vai cua » dai cua, hai cua, bai cua
va hanh » van hanh, va thanh, va danh
tu cach » tu cac
xuc va » duc va, tuc va, luc va
nang o » nang co, nang ho, nang ro
o hai » co hai, so hai, o lai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (thu sach)) ky nang o hai. hieu van nam xuc va hanh ((vai cua) OR (lai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thu sach)) ky nang o hai. hieu van nam xuc va hanh ((vai cua) OR (lai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (thu sach)) ky nang o hai. hieu van nam xuc va hanh ((vai cua) OR (lai cua)) te".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thu sach)) ky nang o hai. hieu van nam xuc va hanh ((vai cua) OR (lai cua)) te*.