There really are no magic tricks, just the golden rule of consistency.
Puppies need to go out after playtime (movement = urine), they need to go out 5 min after they eat or drink, they need to go out pretty much every time you think they have gone out enough. Remember they don't go in the house to spite you.
What are you cleaning your floors with ?? If your puppies are always going back to the same place, perhaps they can still smell their last accident, and therefore want to go in the same spot. Remember most commercial cleaners don't remove the smell.. A mix of white vinegar and water is cheap and efficient at removing all traces of puppy elimination.
At night you can roughly translate how many months they are to how many hours they can hold it. 3 months = roughly 3 hours.
A book that's helpful for the puppy jitters is "How to Raise a Puppy You Can Live With"
by Clarice Rutherford, David H. Neil