Perhaps you should try some spelling variations:
"report forms integration theories." » "report forms integration theorems.", "report forms integrationstheorie 2.", "report forms integration theory.", "report firms integration theories.", "report formal integration theories.", "report focus integration theories.", "report cards integration theories.", "report from integration theories."
"support agri integration series." » "support agri integration services.", "support agri interaction series.", "support agri integration server.", "support grid integration series.", "support der integration series.", "support iii integration series.", "support aging integration series.", "support a integration series."

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"support agri integration series.\") OR (\"report forms integration theories.\"))~".
• Removing quotes may allow a broader search: (( support agri integration series. ) OR ( report forms integration theories. ))~.
• Adding a wildcard symbol may retrieve word variants: (("support agri integration series.") OR ("report forms integration theories."))*.