The word(s) "perchance" appears 15 time(s) in 15 verse(s) in Quran in Abdullah Yusuf Ali translation.

(11) Thou wouldst only, perchance, fret thyself to death, following after them, in grief, if they believe not in this Message.

(12) "But speak to him mildly; perchance he may take warning or fear (Allah)."

(13) Men ask thee concerning the Hour: Say, "The knowledge thereof is with Allah (alone)": and what will make thee understand?- perchance the Hour is nigh!

(14) O Prophet! When ye do divorce women, divorce them at their prescribed periods, and count (accurately), their prescribed periods: And fear Allah your Lord: and turn them not out of their houses, nor shall they (themselves) leave, except in case they are guilty of some open lewdness, those are limits set by Allah: and any who transgresses the limits of Allah, does verily wrong his (own) soul: thou knowest not if perchance Allah will bring about thereafter some new situation.

(15) But what could tell thee but that perchance he might grow (in spiritual understanding)?-