Root around in (something) American British informal
This phrase is often used in the continuous tense.
If you say that you root around something, you mean that you shuffle through it to search for something there.
She was rooting around in her bookcase for her new novel.
Jane rooted around the cupboard for a while, but he couldn't find the porcelain tea set.
After rooting around his wardrobe for two hours, Jenny finally found her dress.
If a person "casts around for someone or something", he/she looks around to find something/someone, or search for an idea.
Try to look everywhere for someone or something
To look around for something or hunt for something.
To be in search of something.
To carefully look everywhere for someone or something.
The verb "root" should be conjugated according to its tense.
If you take a flyer (on something), you take a chance, risk, or gamble on it.
The coach took a flyer on the young goalkeeper, and it turned out to be a wise choice.