I actually have an Asus Vivobook myself and the sound is actually pretty low to be honest so it could be normal yet annoying.

But to be safe make sure all sound-related drivers are correctly installed and up-to-date. Sound may be low but it should definitely be audible.

If drivers are OK, check if some installed sound drivers offer you customization of some kind (different than windows parameters) where you could maybe increase the volume. Not possible on my Asus but it was an option on my previous laptop (MSI) so it's worth checking.

As mentioned in an answer, make sure that the Windows (or other OS) parameters on Sound/Speakers are set to maximum.

If at this point you still want to increase the volume it is possible to some extent but it will very likely result in some quality decrease. You can install third-party software designed to increase the volume such as Letasoft Sound Booster or DFX Audio Enhancer. You can surely find quite a lot of them online with a quick search, I don't have any personal recommendations.

For an incomplete workaround, lots of software differ in how they manage sound and volume and may allow for much "louder" sound delivery. For instance VLC Media Player will allow you to set the volume higher than Windows Media Player, same with MusicBee versus Itunes, etc. But this is OK for specific uses only of course.