しようとして

trying to; in an attempt to

→ 為る
phrase Rare #42,811
trying to; in an attempt to Follows the volitional form of a verb and describes an attempt to do something. It is often followed by the result or difficulty of that attempt.
JA: 彼は辞書をどこにおいたか説明しようとして困った。
EN: He struggled as he tried to explain where he had put the dictionary.

君がそれを否定しようとしても無駄です。

There's no point in your trying to deny it.

彼女は手に余ることをしようとして笑われた。

She was laughed at for trying to bite off more than she could chew.

何もかも買収しようとして応じなかったのは殺された

Those who refused to go along with the attempt to buy everything off were killed.

— ロシアン・ブラザー (1997)

彼は辞書をどこにおいたか説明しようとして困った。

He had trouble trying to explain where he had put the dictionary.