Perhaps you should try some spelling variations:
kho tang » cao tang
sach kho » bach khoa, sach dao, sach nha
te sach » toc sach
danh di » danh du, xanh di, danh dien
va danh » va dinh, va dan, va hanh
cam duc » cao duc, pham duc, nam duoc
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
cua tre » cua te, cuu tre, cua triet
ma hoi » xa hoi, ma hoa, me hoi
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach kho tang ((ma hoi) or (mai hoi)). hieu ve ((cam duc) or (cam xuc)) va danh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach kho tang ((ma hoi) OR (mai hoi)). hieu ve ((cam duc) OR (cam xuc)) va danh di cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach kho tang ((ma hoi) or (mai hoi)). hieu ve ((cam duc) or (cam xuc)) va danh di cua tre*.