。
She tried to get tickets for the concert.
Literal
She [topic-は] concert [genitive-の] ticket [object-を] obtain [tried-to-ようとした].
手に入れる ('to obtain, get hold of,' literally 'put into one's hand') is a vivid set expression — the same image as English 'get one's hands on something.' Combined with the volitional + とした ('tried to'), the sentence reports an attempt without specifying whether it succeeded — '~ようとする' covers both the attempt and the brief moment of trying. コンサート is an English loanword that's fully naturalized; 切符 is the older native term for tickets, used for transportation, events, and other entry passes (though チケット is increasingly common, especially in entertainment contexts).