Perhaps you should try some spelling variations:
tu truyen » co truyen, di truyen
hieu van » thien van, lieu va, hieu ve
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cu tren » tu tren, dua tren
xuc va » duc va, tuc va, luc va
x hoi » xa hoi, o hoi, x ho

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 ky nang x hoi. ((hieu van) OR (hieu va)) cam xuc va hanh vi ((cu tren) or (tu truyen))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. ((hieu van) OR (hieu va)) cam xuc va hanh vi ((cu tren) OR (tu truyen))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. ((hieu van) OR (hieu va)) cam xuc va hanh vi ((cu tren) or (tu truyen))*".