Perhaps you should try some spelling variations:
"gospel missionary / asia / periodicals" » "social missionary / asia / periodicals"
"women missionary / asia / periodicals" » "women missionaries / asia / periodicals", "mormon missionary / asia / periodicals", "non missionary / asia / periodicals"
"codex missionary / asia / periodicals" » "london missionary / asia / periodicals", "dundee missionary / asia / periodicals", "late 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: (("women missionary / asia / periodicals") OR ((("codex missionary / asia / periodicals") OR ("gospel missionary / asia / periodicals")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"women missionary / asia / periodicals\") or (((\"codex missionary / asia / periodicals\") OR (\"gospel missionary / asia / periodicals\"))))".
• Removing quotes may allow a broader search: (( women missionary / asia / periodicals ) or ((( codex missionary / asia / periodicals ) OR ( gospel missionary / asia / periodicals )))).
• Adding a wildcard symbol may retrieve word variants: (("women missionary / asia / periodicals") or ((("codex missionary / asia / periodicals") OR ("gospel missionary / asia / periodicals"))))*.