Perhaps you should try some spelling variations:
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
hang van » hoang van, hang va, dang van
hieu van » thien van, lieu va, hieu ve
thanh mo » thanh moi, thanh mot, thanh do
dau tren » dau tien, dat tren, dau tieng
van hoi » van hoa, van hoc, van hoe
hieu va » lieu va, hieu qua
cau luc » cau truc, cau phuc
luc gia » luoc gia, duc gia, quoc gia
y hang » ly hang, ty hang, yu hang

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 hang van hoi. ((hieu van) or (hieu va)) cau luc gia thanh mo dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) y hang van hoi. ((hieu van) OR (hieu va)) cau luc gia thanh mo dau tren.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (hoc sach)) y hang van hoi. ((hieu van) or (hieu va)) cau luc gia thanh mo dau tren*.