That’s 1.7% of Google’s search volume, which is actually very impressive when you consider the grip Google has on search.
DDG is not much better, I dont believe there is any good search product out there right now, however for technical topics I often find DDG easier to find things from actual manual pages, or Knowledge bases where Google I just get lost of Marketing Blogs trying to sell me something
The ironically exception to this is some time Microsoft own documentation is harder to find on DDG (which is backed by bing) than on google... I think that largly has to do with MS terrible choice to remove technet, and break 50% of their links on the internet.
Search engines without it feel pretty static, like what you get is what you see, and in order to improve your search you need to issue a new one.
There is a workaround to blacklist certain results using an extension in conjunction with a script for it.