I have come up with a theory that if you choose 2 or 3 matches as 0-0s and, combine them to make doubles or trebles, a profit can be made over time! I know the odds are meant to reflect the chances of winning but I feel they are pretty generous once combined.
Here is information about 0-0s in a number of leagues:

21 English Premier out of 370 games (5.7%)
44 French Div 1 out of about 360 games (12.2%)
53 French Div 2 out of 360 games (14.7%)
(Toulose 6 out of 36)
(St Etienne 7 out of 36)
(Grenoble 7 out of 36)
(Cretil 7 out of 36)
(Reims 8 out of 36)
(Wasquehal 10 out of 36!)
(Beauvais 8 out of 36)
26 Italy Serie A out of 288 games (9%)
(Brescia have had 9 0-0s out of 32 games!)
34 Italy Serie B out of 340 games (10%)
(Siena 8 out of 34 games)
21 Dutch Premier out of 275 games (7.6%)
(Nijmegen have had 6 0-0s out of 30 games!)

21 Portegese Premier out of 275 games (7.6%)
(Boavista 6 0-0s out of 31 games)
(Ferreira 5 out of 30)

28 Spanish out of 325 games (8.6%)
45 Spanish B out of 374 games (12%)
(Cordoba 9 out of 35)
(Salamanca 9 out of 34)
(Eibar 8 out of 34)

So for example if you had backed matches involving Brescia, Nijmegen and Boavista being 0-0s last week you could have mage a killing. Assuming the odds were 8-1 for each if you'd done a treble (I know it is very unlikely but just for argument sake) you could have returned 728 units from a 1 unit lay. Even if you'd just backed 2 you would have made a tidy profit of 80 units from a 1 unit bet.

I know that it's late on in the season to come up with a theory and statistics like this but, for example, in Spain yesterday there were 3 0-0 draws out of 5 matches. So I thought it could be of interest. I also thought with most of the Nordic leagues just commencing it could be applied to these.

I figure this could be a fun bet which could also return quite a bit of money over the season by just selecting 3 matches as 0-0s and doing a treble and 3 doubles (or even just selecting 2, depending how confident I feel!).

Todays picks:
Salamanca v Lavante 0-0 (Spanish B)
Terrassa v Eibar 0-0 (Spanish B)

If you have any thoughts on this theory, or any picks, please feel free to comment.

I am not sure if I understand how you are combinging these, how do you decide which ones to put in a double or treble. I can see som many clubs in frnce have several 0-0 draws but maybe not all in the same week so how do you decide how to pick and which teams??

Also be wary Norway leagues do not have that many draws and not often will no team score.

only 10 0-0 games the whole season.