In my design I want to use a bog standard pcb mounted potentionmeter. So in LCSC I used: 1)  the search phrase 'pcb mounted potentiometer' and got 340233 parts found - I baulked at searching through that lot. 2) the search keyword 'potentiometer' and got 0 (zero) parts found. The following messages were displayed:- \* Check spelling of part number or keywords \(my spelling is correct\) \* Use fewer or different keywords \(how can you I use fewer than 1 word \- can the system not count the number or words I used?\) \* Search one part number at a time \( I did \) \* Search by Product Category \( I think that we all know what category a potentiometer is in \) 3) I used the same keywords as 1) and 2) above, online (in Google) and got a few dozen correct likely canditates. Thus proving my keywords/phrases are ok. What am I doing incorrectly in EEDA??...if anything. Will any component, in my BOM, sourced from 'User Contributed()' be available for assembly onto my design or do they all need to come from LCSC? What is the search logic we can use?  'OR', 'AND', 'NOT', etc, etc.?