Perhaps you should try some spelling variations:
thien van » thi van
hieu van » hieu va, lieu va, hieu ve
su triet » su viet, su tien, ve triet
so sach » so sanh, bo sach, co sach
van hoi » van hoc, van hoe, van loi
nam xuc » cam xuc, nam xua, nam thuc
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
vi su » va su, ve su, ki su

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y nang ((van hoi) or (van hoa)). ((hieu van) or (thien van)) nam xuc va hanh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang ((van hoi) OR (van hoa)). ((hieu van) OR (thien van)) nam xuc va hanh vi su triet.
• Adding a wildcard symbol may retrieve word variants: so sach y nang ((van hoi) or (van hoa)). ((hieu van) or (thien van)) nam xuc va hanh vi su triet*.