What are the supplications for facilitating difficult matters, and what is the Beautiful Name of Allah should one supplicate with to remove hardship?

Among the beneficial supplications are: "There is no deity except You; exalted are You. Indeed, I have been of the wrongdoers," and "O Ever-Living, O Sustainer, by Your mercy I seek aid. Rectify for me all my affairs and do not entrust me to myself for the blink of an eye." All of Allah's Most Beautiful Names can be invoked, and scholars have differed concerning Allah's Greatest Name (Ism al-A'dham). Many have opined that it is hidden so that people may supplicate with all His Names. Others have suggested that the majestic word "Allah" is the Greatest Name, or that it is found in specific supplications such as: "O Allah, I ask You, for I bear witness that You are Allah, there is no deity except You, the One, the Self-Sufficient, who has not begotten and has not been begotten, and to whom there is none comparable," or "O Allah, I ask You, there is no deity except You, the Bestower, the Originator of the heavens and the earth, Possessor of Majesty and Honor, O Ever-Living, O Sustainer," or in verses 163 of Al-Baqarah and 1-2 of Al 'Imran.