Perhaps you should try some spelling variations:
su sach » so sach, vu sach
toc gia » toc giay, tac gia, quoc gia
tuc gia » tac gia, duc gia, luc gia
va cham » va chat, va tham
hieu va » lieu va, hieu qua
ty hang » ly hang, thi hang, thu hang
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua

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 ((ty hang) or (ty xang)) ma hoi. hieu va cham ((tuc gia) OR (toc gia)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty hang) OR (ty xang)) ma hoi. hieu va cham ((tuc gia) OR (toc gia)) hanh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty hang) or (ty xang)) ma hoi. hieu va cham ((tuc gia) OR (toc gia)) hanh vi cua tre*".