Create a different page title for every page of your charity's website. This will not only associate your charity with more keywords, but will also encourage people to click on the link when it appears in search results.
You can see the difference it makes on a (historical) search for the keywords 'myths domestic violence'. The search results for this are displayed below.
The first result has information on the myths of domestic violence, but as none of the search keywords are visible in the page title, a user may assume that the link is not relevant to their search and click on the link below.
The titles of your web pages can easily be changed by following the instructions on your web design software, or by going into the HTML code and changing the text between the <title> and </title> tags.