Keep in mind that different searches will result in different results. For example - one classification of search is:
Informational: Prostate Cancer
Navigational: Amazon
Commercial: LCD monitors
Some clearly aren’t in one or the other - maybe you are looking for information about the amazon rain forest - etc. google tries to assign probabilities to all these - and takes a ton of things into consideration. They are trying to please the average user - which sometimes makes it difficult to find what you are looking for.
I’ve been to several google offices and know some google employees. In general they really care about what they do, but sometimes get some tunnel vision. If you find a setting that says they will ignore your past history - I can assure you - unless they have gotten very evil recently - they are honoring your request.
It’s frustrating sometimes as the advent of social media has disturbed many of the traditional signals that worked well for search engines. Sometimes it is helpful to restructure your query. One i use often is adding:
filetype:pdf
To the end of my query - this - if I’m looking for say scientific information - often leads to better quality results. Also adding quotes around words can be helpful as well (although sometimes google ignores this - which really pisses me off)
Anther one is:
site:straightdope.com
If you know a site that is likely to contain the info you want - try restricting it to that site. Even if you want results from more than that site - sometimes you’ll still find what you need (or links/clues to those you do)
Often in can also be helpful to add words that aren’t really important for your search, but can be helpful to locate the documents.
This is especially helpful if their is ambiguity in the search typed. When there is google is less sure what to show and can screw up more. Often times the user won’t realize their search is somewhat ambiguous, but for example - when you type:
[Natural fibers]
You might want to restructure it telling what type you are talking about:
[“natural fibers” cotton]
Or
[“natural fibers” psyllium]
Sometimes you’ll miss certain documents, but often be able to find something like what you are looking for.
You can also type in “textiles” vs “nutrition”, but in my experience - adding words that I expect to be in the documents (but I don’t really necessarily want ranked for relevance) - works best for me.
I didn’t test it in your specific example - so maybe you’ll get the same crap, but think of other ways to ask the same question and sometimes you’ll come upon what you need.