Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
va triet » va thiet, va trien, ve triet
danh dau » lanh dao, hang dau, danh tu
te sach » toc sach
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
sach ky » sac ky, sach y, sach ty
va cach » va cac
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
cua te » cua tu
cua cu » cua chu, cua cau, cua su

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 xa hoi. hieu va cach thuc va danh dau ((va triet) or (((cua te) or (cua cu))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. hieu va cach thuc va danh dau ((va triet) OR (((cua te) OR (cua cu)))).
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. hieu va cach thuc va danh dau ((va triet) or (((cua te) or (cua cu))))*.