Hi,
I have installed Deepin alongside Ubuntu 19.04. I have used ubuntu more than 5 years, but still newbie with linux. I love Deepin but have multiple problems:
-I only have on board settings after locking to system, sometimes
when I have managed to onbord show up, the bottoms do not react
pushes but change colors in wired groups
-to rotate the display there is only manual switch in settings
for it
-the search never finds anything
-i am not able to add languages (I am using Finnish system wide)
-I can not add spellcheckers

Is this normal for Deepin 15.10.1? Have anybody similar experiences? Solutions? (In ubuntu all but fingerprint
locking works)

My computer is Lenovo Joga 720 with i5 prosessor, 250gb flash drive and 11" touch screen display.

Are you referring to the Launcher search. It only searches for installed apps. Use find or locate to find files.

I don't use or change the other mentioned item. now help. I might not interpret what your needing.

I am not reffering to the Launcher but normal file search in file manager. As I said, no matter what I search in Home (Koti) directory or its sub directories, even like letter a, search result is always zero.

I think it is connected to my Finnish language, Deeping does not recognize those Finish file names at all. Also, if If go to terminal and write there "cd Lataukset" (Downloads file in Finnish system) i get the answer, file not found.

I don't think so. Finnish uses extended Latin with very few extra letters (äöå). There's nothing exotic about it.
But I cannot speak for Deepin; it might help to compare with vanilla Ubuntu.

What I'd do to troubleshoot the problem:

1. kill the filemanager and make sure it doesn't respawn
2. open a terminal
3. enter the command to open the filemanager (nemo, deepin-file-manager?)
4. make note of what you see in the terminal
5. recreate the problem
6. make note of anything NEW you see in the terminal window now

...and share that information with us.