Third party keyboard apps are available in no small amount, so if the stock keyboard that comes with your device isn't cutting it for you, there are plenty of replacement options that can serve their purpose. If you were an iOS user, you would have access to the recently launched Gboard keyboard from Google which integrates Google search directly into the keyboard allowing for lighting fast, and convenient, Google searches without having to back out from the app you're typing in. Google hasn't released Gboard for Android, but Google has noted that the features of Gboard will be coming to Android in the future, albeit without a timeframe and with no mention of whether they'll be integrated into the existing Google Keyboard or by way of a new app.
In the meantime, users can get a hold of Gboard's main feature with a different third-party keyboard called Slash Keyboard. For Slash, the power lies behind the "/" commands that users can type up, which are basically just shortcuts to stuff. For example, if a user wants Gboard's Google Search capability within Slash, all they have to do is first type /google and then whatever they're searching for, and results will be listed in a small carousel above the keyboard, essentially giving the user a built-in Google search.
Beyond this, Slash Keyboard offers up tons of other commands, like /youtube, /foursquare, /maps, /giphy, /amazon, and more. there are over 20 different commands that can be used to enhance the typing experience, and you'll find the standard things that most keyboards offer now like tons of emojis. There is even an option to create custom slash commands if you need them. What's more, is that Slash Keyboard is a free application and there are no in-app purchases in sight, so you'll get access to all of the features that it has right from the start. While you wait to see what Google has to offer for Android users with their Gboard features, it might be worth checking out Slash Keyboard if built-in Google search is something that you want to have at the ready when you're typing messages or anything else.