No - there's no complex Boolean searching like that as far as I know. But it would be fairly easy to implement at the client end, surely? Just get your list of photoIDs for 'party', 'thomas' and 'tim' separately, then apply your AND/OR logic to the IDs that are found in both lists.
Hope that makes sense - it's quite early over here 
ben
On 6/17/06, simonvanherweghe <gmail.com">
simon.vanherweghe
gmail.com> wrote:
Hi,
How can I (is there a way to) make a search like this:
'party AND thomas OR tim'
I can perform a search like that directly in the search field from
flickr.com, but when I use it by the api, it fails... It seems like I
can only use one option at the time (please say it isnt)
I've read something about using commas and spaces with the tag_mode
set like 'any', but that doesn't seem to work