Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
sua triet » su triet, cua triet, sua tiet
kho tang » cao tang
nam thuc » nam thuoc, am thuc, nam thu
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
ky tang » ky dang, ky trong, tay tang
hoa hoi » khoa hoi, hoa hoc, hoa doi
hieu ha » hieu hoa, hieu va, hieu ca
thuc va » thuc vat, thuc dan, thuc day
dai sua » dai 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 ((((ky tang) or (kho tang))) or (ky nang)) hoa hoi. hieu ha nam thuc va thanh dai sua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((((ky tang) OR (kho tang))) OR (ky nang)) hoa hoi. hieu ha nam thuc va thanh dai sua triet.
• Adding a wildcard symbol may retrieve word variants: te sach ((((ky tang) or (kho tang))) or (ky nang)) hoa hoi. hieu ha nam thuc va thanh dai sua triet*.