If you are already set up to search from your favourite database then that is the most effective place to search. Otherwise, Google Scholar can be a useful source to export basic citation details for a wide variety of publications.

• Go to Google Scholar
• Click on the Triple Bars icon and go to Settings
• Under Bibliography Manager select 'Show links to import citations into'
• Select 'EndNote' from drop down menu and save
• Carry out a search
• Click the 'Cite' icon under the citation you would like to import to EndNote.
• Click on 'EndNote' from the pop-up box 

• A tab will appear at the bottom left corner of the page 

• Double click on it or click on arrow to open.
• The newly imported references will appear in the Imported References group. Click All References to return All References to view.

Please see below image