"[...] hasn't worked for me as much as I would like it to has": is this grammatically correct? [closed]

The verbal construction you are using is "would like sth to + inf without to".

• I would like my skirt to be shorter.

• I would like the car to go fast.

• I would like the cake to have a cherry on top.

• I would like it to have worked for me too, but it didn't.

You can see that in the four sentences above a conjugated form would not do. So, you must use the infinitive in the sentence you examine.

• but unfortunately, that principle hasn't worked for me as much as I would like it to have worked.

However, in this grammatical context you normally use a so called pro-form for "to have worked" (to). (Wikepedia)

• but unfortunately, that principle hasn't worked for me as much as I would like it to.