I might be biased but I see myself depending on trusted sources - no SEO links, no spam! I want yelp for restaurants, stackoverflow for coding questions, reddit for opinions or allrecipes for recipes.
Came back and tried it. My reason for entering any random text and not coming back would be because the search results are presented like Pintrest or Digg rather than an easily scannable list format--search engines use formats for reasons. Great UX--if I wanted to pass time scrolling about programming instead of Instagram.
My suggestion would be to have all your developers use your search engine exclusively. Use their feedback, you may have already come up with many of the suggestions being presented here.
I wasn't speaking of the apps, though I presume they have the same layout as the no install demo. I want search results in a dense text list, not a sparse-with-too-much-whitespace multicolumn 'cards' that seem so popular with UX-style-rather-than-ergonomic-focused startups.