'Tis true. Some aspects of Lr's text searching are obstinately backwards for anyone used to say GREP searching.
One can get at what you want with some creative manipulation of the keywords, and with the "contains all" (so like joshua tree gets just those, and not all trees; but it also gets Joshua).
But there are better ones. One is John Ellis' Any Filter plugin. I especially love the ability to search by explicit keyword (and save searches too). But it should do what you want. And get his Any Tag plugin as well; it is so fast that I use it to filter as well as add keywords. An added bonus is that it floats, so you can use it in the Map module (another glaring oversight of Lr is that you can't keyword there). Oh, and it commit locations and add descriptive notes. Frankly, I'd rather leave it to Misters Ellis, Beardsworth and Friedl to proved these tools than Adobe, but do try them.
Thank you robgendreau for your helpful tips. I just testing "Any Tag", it works pretty nice. I am using the UltraTag+Pro V4.0 keyword catalog at the moment
which I expand with some own keywords - so your recommended plugins are a good start to make my life a little easier
Nevertheless I would like to see these powerful search capabilities Integrated into LR.
Yeah, I use Photo Mechanic so I know what you mean.
I tend to use the keyword panel a lot to search with it's own search field. Or searching in metadata for filtering; I like to be able to see the hierarchies as opposed to the results of a text search using "aggregate text." A search for "tree" in those methods doesn't get a lot of results, but once I bore down I like to switch to more of a browsing mode to find stuff.
And BTW, you can use "!" to designate "NOT," so a search for "tree !redwood" would exclude all redwood trees. Or "+" to designate the first word, or "starts with." It does make it a bit easier IMHO to search with the pull down "contains" etc menus. So eg a search like this:
Keywords CONTAINS ALL "redwood, van !Duzen"
is conjunctive and gets me REDWOOD and VAN, meaning all my photos of my van near redwood trees or in redwood parks, but not my van or redwoods near the Van Duzen river (where BTW redwood trees abound).
There's good discussion of the rules here: Lightroom Complex Searches | photosurfer
Please add your vote and opinion to these two topics in the official Adobe feedback forum:
I can not search for synonyms: Lightroom: Find keyword by synonym
That will make it a tiny bit more likely Adobe will eventually fix these issues before the next ice age.
Please add your vote and opinion to these two topics in the official Adobe feedback forum
With pleasure - already done.