How to Implement Google Custom Search Results into WordPress Based Websites Without Plugins
WordPress has a relatively good search functionality but tends to get sluggish and doesn’t match keywords that well, and of course when you make a search, WordPress will use a lot resources, why not use the Google custom search instead the default search forms? This is even more apparent when your site is quite large and you have many posts and/or pages. In addition, wordpress search functionality display results ordered by date and not by its relevance to the keywords. If you want to use Google custom search, here are 2 popular Google Custom Search plugins for you to choose from:
1) Google Custom Search Plugin
2) Google Custom Search for WordPress
If you don’t want to use plugin, and want to use the Google custom search engine to replace the WordPress default search, you can follow this guide:
How to replace the WordPress search function with Google Custom Search engine