I solved all puzzles but did not get all furniture and painting scraps. How do I get them now? I tried going back to resolve but doesn't help.

If you've solved all the puzzles within the story then you'll have all the furniture and all the scraps

As there are more places to put furniture than furniture, some players mistakenly think that they're missing some items

Look down the right side of this walkthrough and you'll see Room indexes showing which item goes in which room
http://professorlaytonwalkthrough.blogspot.com/

Further, if you are missing any of the items listed, just click on the item in the walkthrough's index and it will show you where to find them

You can see a picture of the completed rooms here
http://professorlaytonwalkthrough.blogspot.com/2008/02/puzzle105.html

Similarly, if you've solved all the puzzles within the story then you'll also have all the painting scraps

Some players move the scraps around and end up hiding a scrap under another (so think they don't have all the scraps when they actually have)

You can see an illustrated step by step guide to repairing the painting here
http://professorlaytonwalkthrough.blogspot.com/2008/02/puzzle104.html

This should help you confirm whether or not you have any missing scraps

If you are missing scraps then the Painting Scraps index down the right side of the walkthrough will show you where to find them

Another common problem is players thinking that they've solved all the puzzles when they actually haven't (usually by incorrectly assuming that if the last puzzle number in the game's puzzle index is the last puzzle, then all the puzzles must have been found and solved)

The top screen of the trunk will show you exactly how many puzzles have been both found and solved

There are 120 puzzles within the story itself and, at best, you would've unlocked two of the bonus houses (for a maximum of 126 puzzles)

If the number of puzzles solved (as shown in the top screen of the trunk) is less than you expect there to be, then you have to very carefully look through the game's puzzle index to find any missing puzzle numbers

Nothing (besides some hint coins and conversations) can be permanently missed and either you're not missing what you think you're missing or you haven't solved all 120 puzzles within the story