Perhaps you should try some spelling variations:
toc sach » doc sach, thuoc sach, nuoc sach
thanh do » thanh de, thanh pho, thanh hoa
hoc sach » hoc sinh, hoc cac, hoc anh
thu nang » thi nang, thu hang, thu bang
thanh di » thanh doi, thanh de, thanh dinh
xuc van » duc van, luc van, vuc van
cua cau » cua cac, cua chu, cua cay
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
nang co » nang cao, nang doc, nang noi
ve cac » va cac, vien cac

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)) thu nang co hoc. hieu ve 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 sach)) thu nang co hoc. hieu ve cac xuc van ((thanh di) OR (thanh do)) cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) or (hoc sach)) thu nang co hoc. hieu ve cac xuc van ((thanh di) OR (thanh do)) cua cau*".