Perhaps you should try some spelling variations:
thien van » thi van
hieu van » hieu va, lieu va, hieu ve
su sach » so sach, vu sach
va hanh » van hanh, va thanh, va danh
cu tren » tu tren, dua tren
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
x hoi » xa hoi, o hoi, x ho
vi cu » vi su, vi xu, vi du

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang x hoi. ((hieu van) OR (thien van)) cam xuc va hanh vi cu tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang x hoi. ((hieu van) OR (thien van)) cam xuc va hanh vi cu tren".
• Adding a wildcard symbol may retrieve word variants: su sach y nang x hoi. ((hieu van) OR (thien van)) cam xuc va hanh vi cu tren*.