Its currently a really good game btw, and really fun. At first i was kinda stuck and lost because of the language barrier and because i was a little dumb too. But anyways, congratulations and keep doing what you do, its rocks!!!
it''s msotly the same routine for a lot of the game:
open upgrade menu, look what you need for the left upgrade what materials.open top right catalogue, look up what it says about the materials, which biome or area they are in.
usually it's the same biome for all 3 items,otherwise the curresponding items woudl directly have one saying diffeent locations.
like at some point, you'll need one thing from ice, one thign from sand and one from deep blue area.the descriptions in catslogue will tell you that stuff then.