Money to complete company

I've been through the game twice, used the walkthrough, but can't get enough money to finish the company. Any suggestions?

I made sure I upgraded all buildings and found the hidden treasure chests because this took me from 17000 to over 20000 on some levels. Also, you receive resource bonus if you have tools, seed, etc left at when you complete each level. I would sometimes have 100+ of one type of resource.

Go-to main menu hit extras... IF you have" finished" game...a WHOLE NEW area pops up....