To expand means to make something bigger, larger, or to increase its size or scope. It can also refer to expressing ideas or thoughts in more detail or extending activities or operations to reach a wider audience or area. Full definition
This article does a good job of expanding on some of my rationale behind the benefits of owning bonds. (awealthofcommonsense.com)
No matter, as the company has expressed little interest in expanding in that direction in the past. (fool.com)
A spokesperson for the trust said it will now need to look into expanding into areas such as physical education and estates management. (schoolsweek.co.uk)