Script Summary: Within Google Search, double click on a word and you will be presented options to explicitly add or remove the word from the search. To be able to select words within the search result links, use CTRL-z (or other unused CTRL-key) to toggle/disable the links.
Updated: 12 December 2011, v1.04 Prevent double click action from occuring in search edit box so that you may dblclick to highlight/remove.
Updated: 01 November 2011, v1.03 Added functionality for all Google country search sites.
Updated: 01 November 2011, v1.02 Set popup to have higher display index.
Updated: 28 October 2011, v1.01 CTRL-z (or other unused CTRL-key) will disable links so the text may be double clicked. CTRL-z again to enable links.
Released: v1.00 21 October 2011
For the CTRL key to be recognised the search page must have focus. This appears to be a little tricky with Firefox. Clicking within the search box and then CTRL-` should help.