Perhaps you should try some spelling variations:
"codex missionary / asia / periodicals" » "london missionary / asia / periodicals", "gospel missionary / asia / periodicals", "dundee missionary / asia / periodicals"
"non missionary / asia / periodicals" » "now missionary / asia / periodicals", "new missionary / asia / periodicals", "london missionary / asia / periodicals"

Try widening your search to All Fields.

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: (("non missionary / asia / periodicals") OR ("codex missionary / asia / periodicals")).
• Removing quotes may allow a broader search: (( non missionary / asia / periodicals ) or ( codex missionary / asia / periodicals )).
• Adding a wildcard symbol may retrieve word variants: (("non missionary / asia / periodicals") or ("codex missionary / asia / periodicals"))*.