Perhaps you should try some spelling variations:
"lecturas de el arenal = erakurgaiak areatzan." » "lectura de el arenal = erakurgaiak areatzan." (Expand Search), "relectura de el arenal = erakurgaiak areatzan." (Expand Search), "lecturas de el area = erakurgaiak areatzan." (Expand Search), "lecturas de el arenal = erakurgaiak ardatzak." (Expand Search)
"lecturas de el arenal = erakurgaiak ardatza." » "lectura de el arenal = erakurgaiak ardatza." (Expand Search), "relectura de el arenal = erakurgaiak ardatza." (Expand Search), "lecturas de el area = erakurgaiak ardatza." (Expand Search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("lecturas de el arenal = erakurgaiak areatzan.") OR ("lecturas de el arenal = erakurgaiak ardatza."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"lecturas de el arenal = erakurgaiak areatzan.\") OR (\"lecturas de el arenal = erakurgaiak ardatza.\"))".
• Removing quotes may allow a broader search: (( lecturas de el arenal = erakurgaiak areatzan. ) OR ( lecturas de el arenal = erakurgaiak ardatza. )).
• Adding a wildcard symbol may retrieve word variants: (("lecturas de el arenal = erakurgaiak areatzan.") OR ("lecturas de el arenal = erakurgaiak ardatza."))*.