Perhaps you should try some spelling variations:
"research procedures" » "search procedures", "search procedure", "research proceedings"
"research processes" » "research progress", "research practices", "search process", "research progresses", "research projectes", "research programes"
"research projects" » "research project"
"research problems" » "research progress", "research project", "research program"
"research process" » "research progress", "research project", "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 procedures") OR ("research processes"))) OR ("research projects"))) OR ((("research process") OR ("research problems")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"research procedures\") or (\"research processes\"))) or (\"research projects\"))) or (((\"research process\") OR (\"research problems\"))))".
• Removing quotes may allow a broader search: (((((( research procedures ) or ( research processes ))) or ( research projects ))) or ((( research process ) OR ( research problems )))).
• Adding a wildcard symbol may retrieve word variants: (((((("research procedures") or ("research processes"))) or ("research projects"))) or ((("research process") OR ("research problems"))))*.