Dua sits next to 4 phonetic neighbors — Luna, Lua, and Hua are the closest matches by sound. Most share Dua's Arabic-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"supplication to God"
"oak tree, strength"
"beautiful, ornament"
"perfect, complete"
"ray of light, illuminating"
"moon"
"grace, mercy"
"flower, blossom, radiance"
"phonetic/aesthetic (various kanji)"
"sky, heavens, exalted"
"white deer, elegant creature"
"elevated, high in status"
"flexible, supple"
"jasmine flower"
"work, labor"
"light, radiance, splendor"
"one who tends to the weak; healer"
"gold"
"one who rules, goddess"
"sky, heaven"
Similar sound: These names share phonetic patterns with Dua — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Arabic origins, giving them the same cultural heritage as Dua.
Rhythm: Dua is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.