Is there any easy way to do this? I wasted a good bit of time trying to figure it out then just exported to MS Word, which makes it easy to search and replace to bold/highlight/mark all of a specific word or phrase in a document. Any help is appreciated … 
I’m also wondering if there is a way to automatically extract a set number of words before and after a specific mention, or perhaps an entire paragraph, although this may be difficult.
Welcome @KRR
to search and replace to bold/highlight/mark all of a specific word or phrase in a document
No, this is not a function built into DEVONthink.
Also, you didn’t mention what file type you’re referring to. There is no singular note or document format in DEVONthink.
a way to automatically extract a set number of words before and after a specific mention, or perhaps an entire paragraph
No, there are no user-definable options for search hits.
And please clarify what you mean by extract and to where.
Thanks, I was thinking a text file, or any of the formats really.
On the extraction, I meant something that would perhaps extract all highlighted sections of a document into a new note or just extract as an export of some kind.
There is no such function but also not all formats support highlighting, e.g., plain text.
On the extraction, I meant something that would perhaps extract all highlighted sections of a document into a new note or just extract as an export of some kind.
Ahh. With a highlighted document selected, e.g. PDF, use Tools > Summarize Annotations and choose the format.