Hamilton has secured three pole positions this season since joining Mercedes, but not one has yet been converted into a victory.
Starting from the front of the grid in the last two grands prix at Silverstone and in Germany on Sunday, tyre woes have seen Hamilton finish fourth on home soil and fifth at the Nurburgring.
The 28-year-old was a victim of Pirelli's exploding rubber during the British Grand Prix at a time when he was leading the race.
A week later, Mercedes' old degradation woes when temperatures are high returned to haunt them.
A frustrated Hamilton said: "It's crazy the one opportunity I had to win the tyre blew up.
"Who knows when the next opportunity will come? But I'll just keep pushing.
"It would obviously be good to get a win, but at the moment it really doesn't feel like it's going to happen. Luck is definitely not with me.
"But I'll keep working hard, keep trying to qualify myself nice and high up to give myself the best opportunity. At some stage it's got to come."
At one stage Hamilton was out-qualified by team-mate Nico Rosberg for three successive races, with the German on pole on each occasion.
Hamilton has since turned the tables, but takes little solace from that, adding: "I don't feel like it's a boost or anything like that.
"Having the edge on him, everyone expects that, but it doesn't make any difference to me at the moment, especially as I'm not getting the most out of the car.
"When I do, then it will be a lot easier."