Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hieu van » hieu va, thien van, lieu va
vat dinh » va dinh, van dinh, vat sinh
lam thuc » lam thuoc, am thuc, nam thuc
cua tre » cua te, cuu tre, cua triet
dinh va » dinh van, dinh ve, tinh va
te sach » toc sach
ky danh » ky anh
ky dang » ky nang
van lam » van nam

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 dang) or (ky danh)) ha noi. hieu van lam thuc vat dinh va ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky dang) OR (ky danh)) ha noi. hieu van lam thuc vat dinh va ((cua tre) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: te sach ((ky dang) or (ky danh)) ha noi. hieu van lam thuc vat dinh va ((cua tre) or (su triet))*.