Metager is a German search engine that recently added an English translation. Like DuckDuckGo, it passes on search requests to a range of search engines and collates the data before presenting. Also as with DuckDuckGo a range of measures are taken to ensure a user's privacy.
These include not storing your IP address, cookies, or any user-tracking data; only allowing connections via HTTPS; and an optional search via a TOR-hidden service (The Onion Router network), though this requires you to be using the TOR browser first.
Metager also notes its servers are located only in Germany, where data protection laws are some of the strictest in the world, and that the service itself is funded by the non-profit organisation SUMA-EV, the Association for Free Access to Knowledge, and the Leibniz University of Hannover. Which is to say, it is not beholden to corporate or government (particular in light of US data gather programs) interests.
Currently the English version still presents some functions in German (such as its anonymised links) and it appears more cluttered than DuckDuckGo, but as with all search it's always good to have options and see what other engines return for any given search term, so give it a go and see.