Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
vat dinh » va dinh, van dinh, vat sinh
nam thuc » nam thuoc, am thuc, nam thu
lam thuc » lam thuoc, am thuc, dam thuc
dinh vi » dinh ve, dinh viet, dinh tri
tu sach » thu sach, te sach, tu cach
lang xa » lang ha, dang xay, lang van
ly lang » ly hang, ly vang, le lang
su sach » so sach, vu sach
cuu tre » cua tre, cau tren, cau treo
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (su sach)) ly lang xa hoi. hieu van ((lam thuc) or (nam thuc)) vat dinh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ly lang xa hoi. hieu van ((lam thuc) OR (nam thuc)) vat dinh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ly lang xa hoi. hieu van ((lam thuc) or (nam thuc)) vat dinh vi cuu tre*.