Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
thanh do » thanh de, thanh pho, thanh hoa
thanh di » thanh doi, thanh de, thanh dinh
thi hang » thi hanh, thi nang, thi hong
hang cho » sang cho, hang khoa, phong cho
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
cho hoc » co hoc, khoa hoc
hoc anh » hoc nganh, hoc nhanh, ngoc anh
cua cau » cua cac, cua chu, cua cay

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 anh)) thi hang cho hoc. hieu va cac xuc van ((thanh di) or (thanh do)) cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc anh)) thi hang cho hoc. hieu va cac xuc van ((thanh di) OR (thanh do)) cua cau*.