Perhaps you should try some spelling variations:
"research procedures" » "search procedures", "search procedure", "research proceedings"
"research processes" » "research process", "research progress", "research practices"
"research problems" » "research progress", "research process", "research program"

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 processes") OR ("research procedures"))) OR ("research project"))) OR ((("research problems") OR ("research projects")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"research processes\") or (\"research procedures\"))) or (\"research project\"))) or (((\"research problems\") OR (\"research projects\"))))".
• Removing quotes may allow a broader search: (((((( research processes ) or ( research procedures ))) or ( research project ))) or ((( research problems ) OR ( research projects )))).
• Adding a wildcard symbol may retrieve word variants: (((((("research processes") or ("research procedures"))) or ("research project"))) or ((("research problems") OR ("research projects"))))*.