Perhaps you should try some spelling variations:
"connecting the aggregate value series" » "connecting the aggregate revenue series", "connecting the aggregate measure series", "connecting the aggregate health series", "connecting the aggregate values series", "connecting the aggregate value services", "connecting the aggregate value theories"
"connecting the aggregate air services" » "connecting the aggregate firm services", "connecting the aggregate labor services", "connecting the aggregate water services", "connecting the aggregate e services"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("connecting the aggregate value series") or ("connecting the aggregate air services"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("connecting the aggregate value series") OR ("connecting the aggregate air services")).
• Removing quotes may allow a broader search: (( connecting the aggregate value series ) or ( connecting the aggregate air services )).
• Adding a wildcard symbol may retrieve word variants: (("connecting the aggregate value series") or ("connecting the aggregate air services"))*.