Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hanh hai » thanh hai, nhanh hai, hang hai
nam thuc » nam thuoc, am thuc, nam thu
hieu le » hieu ve, hieu ly, tieu le
hai cua » thai cua, dai cua, hoi cua
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
te sach » toc sach
hieu he » hieu ve, hiem he, hieu hien
hoa hoi » khoa hoi, hoa hoc, hoa doi
ky lang » ky dang, ky tang, tay lang

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 lang) or (ky nang)) hoa hoi. ((hieu he) OR (hieu le)) nam thuc va hanh hai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky lang) OR (ky nang)) hoa hoi. ((hieu he) OR (hieu le)) nam thuc va hanh hai cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky lang) or (ky nang)) hoa hoi. ((hieu he) OR (hieu le)) nam thuc va hanh hai cua viet".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky lang) or (ky nang)) hoa hoi. ((hieu he) OR (hieu le)) nam thuc va hanh hai cua viet*.