Perhaps you should try some spelling variations:
sach kho » bach khoa, sach dao, sach nha
kho tang » cao tang
tuan cac » thuan cam, quanh cac, thanh cac
van tuan » van quan, van ban, anh tuan
cham duc » pham duc, cham soc, pham duy
te sach » toc sach
chu tre » cho tre, cuu tre, cau tren
duc van » duc va, duc tan, duc manh
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
hoa hoi » khoa hoi, hoa hoc, hoa doi
chu tri » chua tri, chu thi, chu tai
ha hoi » ha noi, xa hoi, va hoi

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach kho tang ((ha hoi) OR (hoa hoi)). hieu ve cham duc van tuan cac ((chu tre) OR (chu tri))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach kho tang ((ha hoi) or (hoa hoi)). hieu ve cham duc van tuan cac ((chu tre) OR (chu tri))~".
• Adding a wildcard symbol may retrieve word variants: te sach kho tang ((ha hoi) or (hoa hoi)). hieu ve cham duc van tuan cac ((chu tre) OR (chu tri))*.