I have a string content. 

```
$string = "FIRST he ate some lettuces and some French beans, and then he ate some radishes AND then, feeling rather sick, he went to look for some parsley.";

```

Here I want to take a specific string

```
"then he ate some radishes"

```

How can I do it with REGEX? I want it in REGEX only

```
I want to pass just 2 parameters like 
1. then 
2. radishes

```

so finally I want output like `"then he ate some radishes"`