The word(s) "plan" appears 42 time(s) in 39 verse(s) in Quran in Mohsin Khan translation.

(11) And when We let mankind taste mercy after some adversity has afflicted them, behold! they take to plotting against Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.)! Say: "Allah is more Swift in planning!" Certainly, Our Messengers (angels) record all of that which you plot.

(12) And this Qur'an is not such as could ever be produced by other than Allah (Lord of the heavens and the earth), but it is a confirmation of (the revelation) which was before it [i.e. the Taurat (Torah), and the Injeel (Gospel)], and a full explanation of the Book (i.e. laws, decreed for mankind) - wherein there is no doubt - from the Lord of the 'Alamin (mankind, jinn, and all that exists).

(13) So he [Yusuf (Joseph)] began (the search) in their bags before the bag of his brother. Then he brought it out of his brother's bag. Thus did We plan for Yusuf (Joseph). He could not take his brother by the law of the king (as a slave), except that Allah willed it. (So Allah made the brothers to bind themselves with their way of "punishment, i.e. enslaving of a thief.") We raise to degrees whom We will, but over all those endowed with knowledge is the All-Knowing (Allah).

(14) That is of the news of the Ghaib (Unseen) which We reveal to you (O Muhammad صلى الله عليه و سلم). You were not (present) with them when they arranged their plan together, and (while) they were plotting.

(15) Indeed in their stories, there is a lesson for men of understanding. It (the Qur'an) is not a forged statement but a confirmation of (Allah's existing Books) which were before it [i.e. the Taurat (Torah), the Injeel (Gospel) and other Scriptures of Allah] and a detailed explanation of everything and a guide and a Mercy for the people who believe.

(16) And verily, those before them did devise plots, but all planning is Allah's. He knows what every person earns, and the disbelievers will know who gets the good end (final destination).

(17) Indeed, they planned their plot, and their plot was with Allah, though their plot was not such as to remove the mountains (real mountains or the Islamic law) from their places (as it is of no importance)[Tafsir Ibn Kathir] .

(18) And make not your oaths a means of deception among yourselves, lest a foot should slip after being firmly planted, and you may have to taste the evil (punishment in this world) of having hindered (men) from the Path of Allah (i.e. Belief in the Oneness of Allah and His Messenger, Muhammad صلى الله عليه و سلم), and yours will be a great torment (i.e. the Fire of Hell in the Hereafter).

(19) And We have appointed the night and the day as two Ayat (signs etc.). Then, We have obliterated the sign of the night (with darkness) while We have made the sign of the day illuminating, that you may seek bounty from your Lord, and that you may know the number of the years and the reckoning. And We have explained everything (in detail) with full explanation.

(20) "And by Allah, I shall plot a plan (to destroy) your idols after you have gone away and turned your backs."