Perhaps you should try some spelling variations:
"sociale verzekeringen/pensioenen/nationale betoging 1930 | assurances societes/pensions/manifestation nationale 1930" » "sociale verzekeringen/pensioenen/nationale betoging 1930 | assurances societe/pensions/manifestation nationale 1930"
"sociale verzekeringen/pensioenen/nationale beweging 1930 | assurances societes/pensions/manifestation nationale 1930" » "sociale verzekeringen/pensioenen/nationale beweging 1930 | assurances societe/pensions/manifestation nationale 1930"

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: (("sociale verzekeringen/pensioenen/nationale betoging 1930 | assurances societes/pensions/manifestation nationale 1930") OR ("sociale verzekeringen/pensioenen/nationale beweging 1930 | assurances societes/pensions/manifestation nationale 1930"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"sociale verzekeringen/pensioenen/nationale betoging 1930 | assurances societes/pensions/manifestation nationale 1930\") OR (\"sociale verzekeringen/pensioenen/nationale beweging 1930 | assurances societes/pensions/manifestation nationale 1930\"))".
• Removing quotes may allow a broader search: (( sociale verzekeringen/pensioenen/nationale betoging 1930 | assurances societes/pensions/manifestation nationale 1930 ) OR ( sociale verzekeringen/pensioenen/nationale beweging 1930 | assurances societes/pensions/manifestation nationale 1930 )).
• Adding a wildcard symbol may retrieve word variants: (("sociale verzekeringen/pensioenen/nationale betoging 1930 | assurances societes/pensions/manifestation nationale 1930") OR ("sociale verzekeringen/pensioenen/nationale beweging 1930 | assurances societes/pensions/manifestation nationale 1930"))*.