Hello Duy,
Yes, absolutely you can. Malwarebytes wouldn't conflict with AVG Free Antivirus.
If you have any conflicting issues then please any one of the Antivirus program.
Please feel free to contact us if you need any assistance.
Can i use avg with malwarebytes anti malware home free ?
Duy, Yes… You use Malwarebytes free version with AVG. It's the 'paid for' full version where conflict issues occur. Have a look @ this AVG article (http://avgclick.me/ConflictingApps).
AVG Guru