Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
cua thuoc » nha thuoc, cay thuoc, cua quoc
nam thuc » nam thuoc, am thuc, nam thu
va thanh » gia thanh, ban thanh, va tinh
cua nuoc » cua quoc, cua nguoi, nha nuoc
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
ty lang » tay lang, ty xang, ty hang
lang xa » lang ha, dang xay, lang van
hieu ha » hieu hoa, hieu va, hieu ca
thuc va » thuc vat, thuc dan, thuc day

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty lang xa hoi. hieu ha nam thuc va thanh doi ((cua nuoc) OR (cua thuoc))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty lang xa hoi. hieu ha nam thuc va thanh doi ((cua nuoc) OR (cua thuoc))".
• Adding a wildcard symbol may retrieve word variants: vu sach ty lang xa hoi. hieu ha nam thuc va thanh doi ((cua nuoc) OR (cua thuoc))*.