Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
danh vi » dinh vi, danh di, danh va
cu tren » tu tren, dua tren
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: tu sach ky nang xa hoi. hieu van cam xuc va ((danh vi) OR (hanh vi)) cu tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu van cam xuc va ((danh vi) OR (hanh vi)) cu tren".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu van cam xuc va ((danh vi) OR (hanh vi)) cu tren*.