Perhaps you should try some spelling variations:
"relations industrial internacional" » "relations empresarial internacional" (Expand Search), "relations judicial internacional" (Expand Search), "relations arbitral internacional" (Expand Search), "relaciones industriales internacional" (Expand Search), "relations industrielles internacional" (Expand Search), "regulacion industrial internacional" (Expand Search)
"regulacion informal internacional" » "regulacion informal international" (Expand Search), "regulacion norma internacional" (Expand Search), "regulacion informativo internacional" (Expand Search), "educacion informal internacional" (Expand Search), "negociacion informal internacional" (Expand Search), "regulacion laboral internacional" (Expand Search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("relations industrial internacional") OR ("regulacion informal internacional"))~.
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• Removing quotes may allow a broader search: (( relations industrial internacional ) OR ( regulacion informal internacional )).
• Adding a wildcard symbol may retrieve word variants: (("relations industrial internacional") OR ("regulacion informal internacional"))*.