P: Search for multiple words in filenames

So, after client selected 50 photos, I went back to light room and do a bulk search. Showing me error. 

Why lightroom! Why can I search all the file name at once, Insted of searching one by one for 50 photos!

Anyone got an idea how to fix this?

You could try to use the Collaborative Proofing feature in LrWeb. It's a Technology Preview which needs to be enabled, and you can use it to share an album with the client, and to have them make a number of selections. Once they have made their selections, you can then have an album of those selections automatically created. That will appear in the Lightroom desktop app, so you then have an album which contains just the selected images, so no need to try finding them in a search.

Today, I had have to select DSC8171.arw and DSC8175.arw so I entered 8171 and 8175 in the search field in Lr but I was not able to use "contains" search option in LrC
I know Lr is more simplified version of LrC but it is a very inconvenient feature for users like me who need to quickly select by the file number.

Thank you from Seoul, South Korea.

Updating Status

Current behavior is as-designed. Converting this thread into a feature request. 

I want to search for several file names. (as found in LR classic)

(My file names start with D3S)

If I type 4820,5136 4820 5136, etc. it does not work.

** If I type D3S_4820, 5136, it works! And brings up 2 photos.

If I type D3S_4820, 5136, then try to add any other file names... it does not work.

Some examples (screenshots would work too) of the information you are entering into the search field would be helpful.  It is hard to determine what is going on from the scant information. 

Also remember Lightroom searches function in an "AND" capacity. If you enter two file name fragments, it will search for items containing both. There is no "OR" functionality. 

Same here! I can only search for one Picture, whenever I search for multiple pictures (I separated the file names with ; and tried also ,) and always Black hole appeared!