Hello @tardispilot and welcome to the community,
Currently Bitwarden recommends having separate accounts between your work & personal.
The feature for account switching helps to overcome any issues here and allow for users to quickly switch between those separate accounts and gain access to different vaults (personal individual + shared family org & work individual + shared Org vaults) for multiple credentials and items.
For searching between multiple accounts this may be similar to
Feel free to drop a vote that way if you feel it would work for you and the request you have here.