Perhaps you should try some spelling variations:
20 political » 10 political
22new spain » new spain
2f politics » 2 politics, 22 politics, 23 politics
21 politics » 2 politics, 1 politics, 11 politics
20 politics » 2 politics, 10 politics, 5 politics
21 sources » 2.1 sources, 1 sources, 11 sources
f sources » 3 sources, 1 sources, 5 sources

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: %22new spain %((((2f politics) OR (21 politics))) OR (((20 politics) OR (20 political)))) AND government %2f 18th century %((f sources) OR (((21 sources) OR (2 sources))))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22new spain %((((2f politics) or (21 politics))) or (((20 politics) OR (20 political)))) and government %2f 18th century %((f sources) or (((21 sources) or (2 sources))))%22".
• Adding a wildcard symbol may retrieve word variants: %22new spain %((((2f politics) or (21 politics))) or (((20 politics) OR (20 political)))) and government %2f 18th century %((f sources) or (((21 sources) or (2 sources))))%22*.