Google has made new proposals to the European Union (EU) in efforts to settle a three-year-old antitrust case.

The proposals come after the European Commission asked the search engine to come up with more measures to address concerns that it was blocking rivals such as Microsoft in web searches.

EU Competition Commissioner Joaquin Almunia told Bloomberg that he had received an offer from Google the previous week.

"If we are satisfied with the new proposals, we can advance toward an agreed solution in the coming months," Almunia said.

"Once we have completed our analysis, once we will check that these new proposals are able to eliminate our concerns, we will tell Google what to do."

The EC has been investigating Google since 2010 after receiving various complaints from firms such as Microsoft, Expedia and TripAdvisor, claiming it was blocking competitors from its search results.

A Google spokesman said that the latest proposal to the EC addresses the four areas of concern.

"We continue to work with the commission to settle this case," he said.

EC’s concerns include, search bias, using third party content as part of its own services and advertising selectiveness.

In April 2013, Google offered a package of concessions to the EU to resolve the antitrust probe, by agreeing to clearly tag search results from its own services.