didn’t found any problem vs didn’t find any problem

Some examples from the web:

• Our technicians haven't found any problems with the recovered unit.
• We still haven't found the problem.
• They inspect the bridge every year, they obviously haven't found a problem.
• I haven't found a physiological problem with your mother.
• EU auditors have visited the UK and in their reports have found problems in certain areas.
• If any problems are found, then you should continue to be monitored during sleep.
• For example, the report found problems regarding the communication of the safety measures and tools available on the sites.
• CO: We walked up to the church because we heard that they had hot meals, but when we arrived we found problems.
• When the UK Food Standards Agency (FSA) began testing other warm-water prawns, it found problems with samples from Thailand, Vietnam, Pakistan and Indonesia.
• Finn Montgomery found the problem in the building's deflection.
• Think I may have found your problem.
• My dad found a problem with the oxygen system.
• Tell our friends back home that she found the problem, solved it.
• Mr. Lewis found the problem.
• The satellite also found another problem.
• I found another problem in one of the treatment rooms.
• We found some problems at Browning Security.
• I think we've found the problem here.
• I think I've found the problem.
• Dana thinks we may have found a problem with our new formula.

Some examples from the web:

• We have double-checked our production and distribution protocols, and we didn't find a single problem.
• I didn't find both of you have any problems.
• Diagnostics could not find any obvious problems.
• I didn't find both of you have any problems.
• Only problem was, they didn't find any of the computers, so, Customs cut Hollister loose.
• No, we didn't find any kind of rifle.
• I didn't find any peach blossoms there.
• I didn't find any bone fragments.
• I didn't find any soot in his lungs.
• They didn't find any DNA, either.
• We didn't find any signs of beatings.
• Didn't find any Gemini this time.
• We didn't find any strips of skin.
• We didn't find any prescriptions at Carrie's house.
• So he didn't find any I.D. on the victim.
• LAPD didn't find any brass.
• Didn't find any trace of it there.
• Didn't find any explosives, nothing rigged, but be careful.
• You didn't find any new evidence.
• HAZMAT team scoured the scene, but didn't find any incendiaries.