Perhaps you should try some spelling variations:
canadian political » canadian politics, indian political, confucian political
indian politics » india politics, asian politics, african politics
charles gray » charles grey, charles ray, charles grant

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: charles gray (((indian politics) OR (canadian political))).
• Adding a wildcard symbol may retrieve word variants: charles gray (((indian politics) or (canadian political)))*.