"Came across with" is a phrase that is commonly used to indicate that someone has encountered or stumbled upon something. However, there are several synonyms that can be used in place of this phrase to add variety to one's language. For example, instead of using "came across with," you could say "encountered," "discovered," "chanced upon," "unearthed," or "stumbled upon." These synonyms not only convey the same meaning as the original phrase but also add an element of style and sophistication to one's writing or speech. So, whether you are writing an essay or having a conversation with someone, consider using these synonyms in place of "came across with" to make your language more engaging and expressive.