When researching on the internet, try not to limit yourself to one search engine. Search engines regularly modify their algorithms to reduce hijacked results (sometimes works, sometimes makes things worse!) so your favourite today could serve you junk tomorrow (and be back to best next month).
G unfortunately serve results based on what they thought you wanted, ignoring the terms you actually typed. They have also ceased support for the + operator. If I want Reen House, I do not want Greenhouse thank you.
The various search tools have differing sets of web pages and differing algorithms. For difficult subjects it is usually best to use two or three search engines at least. Don't use links to Ask, as they are most often associated with pre-redirects - the built in link to Ask from Opera 11 will hijack you for example- but type in the url personally.
I have found it advantageous to try some of the other search engines below instead of (or as well as) Google.