Boneva sits next to 5 phonetic neighbors — Bonita, Geneva, and Ginevra are the closest matches by sound. Most share Boneva's Slavic cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"good, kind"
"other, foreign"
"ewe; gentle one"
"free man"
"Chosen one; seeress"
"gift from God"
"flowering; bright blossom"
"from the flat clearing"
"daughter of Zeus, Titaness"
"of the elder tree"
"blessed"
"deep, profound"
"pure"
"contemplation, beholding"
"noble hill; Ella hill"
"pure, gentle, mild"
"defender of mankind"
Similar sound: These names share phonetic patterns with Boneva — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Bulgarian origins, giving them the same cultural heritage as Boneva.
Rhythm: Boneva is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.