How to remove minimum 3 letters search keyword?

I want to search with 2 characters.

Okular Version 25.04.1
Operating System: openSUSE Tumbleweed 20250514
KDE Plasma Version: 6.3.5
KDE Frameworks Version: 6.14.0
Qt Version: 6.9.0
Kernel Version: 6.14.5-1-default (64-bit)
Graphics Platform: X11
Processors: 12 × AMD Ryzen 5 4600H with Radeon Graphics
Memory: 7.6 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 1650 Ti
Manufacturer: LENOVO
Product Name: 82B5
System Version: Lenovo Legion 5 15ARH05

hi, welcome

if you search the contents tab it starts filtering at the first character

but if you insist on searching the thumbnails you can use a space (preceding or trailing) to pad out to the 3 character requirement and it will still find all instances of the two character string.

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