'I will dig deeper' is correct and can be used in written English.
You can use this phrase when showing determination and commitment to achieve a goal. For example you might say, "I am not satisfied with the results I have achieved so far, so I will dig deeper to get the answers I need."
These are complex issues, and I will dig deeper in the coming months to establish whether bias is a factor".
Next week, I will dig deeper into the details, try to answer such questions as where the money to pay for this program would come from, and minuses and pluses of the program for education in general, and update you on any recent developments.
The next two subsections will dig deeper into the possible reasons behind that disparity.
In Section 4.3, we will dig deeper into this observation, analyzing the dynamics of bright versus dimly lit areas.
In the following section we will dig deeper into the mechanism with which the arbitrator nudges the parties towards optimal investments.
Sending a pitch deck is great – if the email intrigues the investor, then he or she will dig deeper.
After having answered this question, we will dig deeper into the religious aspects of marriage by investigating what spousal socio-demographic characteristics are correlated (and obviously the directions of these correlations).
Once he sees comments about those topics, he will dig deeper.
It is my hope that people will dig deeper than news stands to find the courage to form their own opinions about what is beautiful.
As the hospital struggle with the load of dozens of victims — the latest casualty count has 2 3 dead and at least 23 90 141 injured — police investigators and journalists alike will dig deeper into the madness to figure out exactly what happened.
"The Lions coaches said beforehand they were looking to stress the players in different ways, and when they do have that dark moment in Australia, when their backs are against the wall, they will dig deep and I am sure they will benefit from this," he said.
