en needle in haystack (n)
― RelatedTo ⟶
Weight: 1.0
en intractable Source: English Wiktionary
en needle in haystack (n)
― RelatedTo ⟶
Weight: 1.0
en difficult Source: English Wiktionary
en needle in haystack (n)
― RelatedTo ⟶
Weight: 1.0
en complex Source: English Wiktionary
en needle in haystack (n)
― RelatedTo ⟶
Weight: 1.0
en impossible Source: English Wiktionary