model unable to generate latex out of its training data

[dishan14]

i trained the model and it is giving correct latex for the image if the latex is in the training data but when i change even a single variable then it is giving wrong result.

example- -1<x<2 ,its latex is in training data ,result- -1<x<2 when i change a variable or number, y<x<2, result- -1<x<2

it is not able to detect the variable or number change and gives the same result as in the training data, how to overcome this problem?