Here's a hack you can use to filter Google search results to limit them to a certain time frame.

- Go to Google and perform the search you want to do.

- Once you get your results, go up to the address bar and add the following to the end of the URL there: &as_qdr=d

If you do that, you'll get back your previous search results, but filtered to limit them to the last day. Also, once you do this, you'll get a pull-down menu to the right of your search term that allows you to select other time frames as seen here:

Time filtered Google search results

You can also adjust the URL to get any time frame you want, you are not limited to those in the pull-down menu. To get other time frames, edit the URL parameter that you entered before by adding a number after the d to get results over that many days. You can also use w for weeks, m for months, and y for years. So some example URLs would be:

...&as_qdr=d3...    results from the last 3 days
...&as_qdr=w2...    results from the last 2 weeks
...&as_qdr=m4...    results from the last 4 months
...&as_qdr=y6...    results from the last 6 years

You get the idea. Using this cool new parameter, you can limit the Google search results to the time frame you want.