time period *
period of time
period *****

The whole show in itself is told over a time period of 10 months.

But something else happened, in the very same time period.

The study did not look at a longer time period.

His team found evidence of human use over a long time period.

The time period in question is quite a long one, from the 8th century to the 12th.

But people have known me over a long period of time.

He worked as a teacher for a short period of time.

I have known you well over a long period of time.

Even then much may return over a period of time.

John has turned around two programs in a short period of time.