"perhaps' or 'maybe'
Perhaps "positive" word is more accurate.
Maybe "positive" word is more accurate.

You are perhaps asking too many questions!
You are maybe asking too many questions!

Perhaps you can do it?
Maybe you can do it?

Perhaps you had this experience?
Maybe you had this experience?

Can I use these interchangeably?

Question

"perhaps' or 'maybe'
Perhaps "positive" word is more accurate.
Maybe "positive" word is more accurate.

You are perhaps asking too many questions!
You are maybe asking too many questions!

Perhaps you can do it?
Maybe you can do it?

Perhaps you had this experience?
Maybe you had this experience?

Can I use these interchangeably?

Answer

Yes, they are used intetchangeably but maybe is less formal, read more:

https://www.google.iq/amp/s/dictionary.cambridge.org/amp/grammar/british-grammar/maybe-or-perhaps

Answer

Perhaps "positive" is more accurate for this sentence. 
this is right?
thank you, Gary!

Answer

Your first example is not natural English.
I'm not sure what you are trying to say. I guess possibly 'Perhaps "positive" is more accurate for this word'?
If you can give context, someone might be able to suggest a better option.

Verpassen Sie nicht die Gelegenheit, bequem von zu Hause aus eine Sprache zu lernen. Stöbern Sie in unserer Auswahl an erfahrenen Sprachlehrern und melden Sie sich jetzt zu Ihrer ersten Unterrichtsstunde an!