All the search engines have trash. I retrieve results from a variety of search engines and mix them into a simplified SERP with zero cruft that can be read very quickly. Some call searching multiple search engines "meta-search". The main differences with mine is 1. it is all done client side (there is no remote "meta-search" engine) and 2. searches can be "continued" where they left off at any time. This allows one to avoid rate limits. There are always trash results, every search engine has them in their SERPs, but I find that the more results and the more varied the results the better the chance of finding useful, non-trash ones. Gigablast allows returning at least 100 results at a time. Few search engines allow 100 results at a time that anymore. Google still allows it but will not allow a user to retrieve more than 200-something results total.