The most clever way to select values is to select those values within a listbox or other objects. If there are quite a lot of values it's usually very useful to create one or more extra fields to categorize them hierarchically or in other ways - and provide those fields in the UI, too. To save space in the UI you may put them within a container.
If any possible you should try to avoid all the magic and Let-the-User-Select.
Nevertheless if you want to remain by the actions you need a second action-type of toggle-select to add a selection to an already existing selection (whereby actions aren't mandatory executed sequentially and therefore actions which dependend of each other may fail). Easier is then mostly to add all the values within a single search-statement like you did whereby you need to add double-quotes for the values because they contain spaces and it must be recognized as a search and not only as a string. Just try it in this way:
= '("Haem Nurse Acute"|"Acute Haem Nurse")'
Beside this both values look very similar - if they are really the same and they differ just because of a different writing (usually a matter of data-quality) - you should consider to harmonize them, maybe with a mapping.
- Marcus
