Here's one: python list popleft

Third result is: http://docs.python.org/library/stdtypes.html

6th result is: http://stackoverflow.com/questions/4426663/how-do-i-remove-t...

Neither one of those contains "popleft".

I don't know - if I had to guess what the query 'python list popleft' meant, it would be 'how to pop the leftmost element from a list', even though the answer does not contain the word 'popleft'.

Try putting quotes around popleft in your query. That works in this case to get rid of the results that don't specifically include the word.

In this case it does, but very often doesn't. It seems to me that this happens mostly with rapidly changing websites, as if the cache showed a somewhat later state than when it was indexed.

And this has been an annoyance since years.