There are different Business Directories :

Try all different Business Directories offered by
Every Engine has different results,
Most companies are listed in serveral directories
but the results are not the same ...


find products
and order them directly (example Tea, Jewels, Tissus)

Products via Amazon

Business to Consumers - Companies providing Products or Sevices for End Users
(example Restaurant)

B2C Directory

Business to Business - Companies providing Products for Professionals
(example Manufacturer of Kitchens)
coming soon

search in another country
Phone Book of the
maybe the person you are looking for has moved
and can be cound through the directory of another country

search through the government
Italy Gov Search
this search engine goes through
all the Indian ministeries,

good luck ...