I'm afraid not or, at least, it would be very confusing, since these sounds entail a change of meaning; for instance, it is not the same to say "pelo" (hair), "pero" (but) or "perro" (dog). I know these sounds are really hard to pronounce for Chinese speakers. So, I'm sorry but you should keep on practising. ¡Mucho ánimo!

Although sometimes words can get confused, if you are talking to somebody they would consider the context, so generally you would be understood. But as it was said, just a little bit of practice and you will succeed!