Estudo sobre Davi (David Study)?

Phyllis lin

Senior Member
Hi, can someone help me?
The following are keywords I want to use in different articles. I get its meaning in English by google translation. Do you think they(English version) are right or understandable? Especially the second one, is it right? If not, can you tell me its English meaning? Thank you in advance!

1 Perseguição de cristãos (Persecution of Christians)
2 Estudo sobre Davi (David Study)
3 Estudo sobre Salomão (Study on Solomon)
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