Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
bien dai » hien dai, vien dai, bien doi
su triet » su viet, su tien, ve triet
va hanh » van hanh, va thanh, va danh
ve cai » va cai, ve tai, ve cau
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
ve cac » va cac, vien cac
x hoi » xa hoi, o hoi, x ho
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: thu sach y nang x hoi. hieu ((ve cai) or (((ve cac) or (bien dai)))) xuc va hanh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang x hoi. hieu ((ve cai) OR (((ve cac) OR (bien dai)))) xuc va hanh vi su triet.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang x hoi. hieu ((ve cai) or (((ve cac) or (bien dai)))) xuc va hanh vi su triet*.