Perhaps you should try some spelling variations:
research progress » research program, research project
research problems » research project, research program
research projects » research project
research process » research project, research program, research papers

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: (((( research process ) OR ( ((research problems) OR (research progress)) ))) OR ( research projects )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( research process ) or ( ((research problems) OR (research progress)) ))) or ( research projects ))".
• Adding a wildcard symbol may retrieve word variants: (((( research process ) or ( ((research problems) OR (research progress)) ))) or ( research projects ))*.