Does it accept the word "pluma" instead of "bolígrafo?"
Pluma is acceptable so if DL doesn't accept it, it should. Another one is "puntabola."
Doesnt no tengo count as much as yo no tengo?
Se puede usar puntabola o pluma en vez de boligrafo?
Have not tried it, but on the reverse tree many native speakers say bolígrafo has gone out of common use. Like if we said fountain pen.
How do you use tengo and tiene
"tengo" means "I have". "tiene" means "he/she has" and "you have" (in the singular polite/formal form).
"No tengo mi boli" is also accepted in Andalucía. Andalucían Spanish tends to shorten a lot of words so "boli" is more common here.
I am still struggling to understand when to use "mi" vs "mí"...
Last question have was tiene, why have 17 million different ways to say one word
There is difference between tener and haber