Perhaps you should try some spelling variations:
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
thanh ve » hanh ve, thanh va, thanh vien
cau treo » cau theo, cau tren, cau triet
hieu ve » hieu va, hieu van
xuc gia » duc gia, luc gia, quoc gia
tuc gia » tac gia, duc gia, toc gia
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
ve cau » ke cau, va cau, ve cac
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: ((toc sach) OR (hoc sach)) y nang x hoi. hieu ve cam ((xuc gia) or (tuc gia)) thanh ve cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) y nang x hoi. hieu ve cam ((xuc gia) OR (tuc gia)) thanh ve cau treo*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (hoc sach)) y nang x hoi. hieu ve cam ((xuc gia) or (tuc gia)) thanh ve cau treo*".