Perhaps you should try some spelling variations:
"vakbonden/Syndicale Commissie | syndicat/Commission Syndicale" » "vakbonden/Syndicale Commissie | syndicaat/Commission Syndicale", "vakbonden/Syndicale Commissie | syndicats/Commission Syndicale", "vakbonden/Syndicale Commissie | syndicale/Commission Syndicale"
"vakbond/Syndicale Commissie | syndicaats/Commission Syndicale" » "vakbond/Syndicale Commissie | syndicaat/Commission Syndicale", "vakbond/Syndicale Commissie | syndicats/Commission Syndicale"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("vakbonden/Syndicale Commissie | syndicat/Commission Syndicale") OR ("vakbond/Syndicale Commissie | syndicaats/Commission Syndicale"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"vakbonden/Syndicale Commissie | syndicat/Commission Syndicale\") OR (\"vakbond/Syndicale Commissie | syndicaats/Commission Syndicale\"))".
• Removing quotes may allow a broader search: (( vakbonden/Syndicale Commissie | syndicat/Commission Syndicale ) OR ( vakbond/Syndicale Commissie | syndicaats/Commission Syndicale )).
• Adding a wildcard symbol may retrieve word variants: (("vakbonden/Syndicale Commissie | syndicat/Commission Syndicale") OR ("vakbond/Syndicale Commissie | syndicaats/Commission Syndicale"))*.