The word(s) "strive" appears 34 time(s) in 29 verse(s) in Quran in Mohsin Khan translation.

(11) And when a Surah (chapter from the Qur'an) is revealed, enjoining them to believe in Allah and to strive hard and fight along with His Messenger, the wealthy among them ask your leave to exempt them (from Jihad) and say, "Leave us (behind), we would be with those who sit (at home)."

(12) And whoever desires the Hereafter and strives for it, with the necessary effort due for it (i.e. does righteous deeds of Allah's Obedience) while he is a believer (in the Oneness of Allah - Islamic Monotheism) - then such are the ones whose striving shall be appreciated, (thanked and rewarded by Allah).

(13) "Verily, the Hour is coming - and I am almost hiding it from Myself - that every person may be rewarded for that which he strives.

(14) But those who strive against Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.), to frustrate them, they will be dwellers of the Hell-fire.

(15) And strive hard in Allah's Cause as you ought to strive (with sincerity and with all your efforts that His Name should be superior). He has chosen you (to convey His Message of Islamic Monotheism to mankind by inviting them to His religion of Islam), and has not laid upon you in religion any hardship: it is the religion of your father Ibrahim (Abraham) (Islamic Monotheism). It is He (Allah) Who has named you Muslims both before and in this (the Qur'an), that the Messenger (Muhammad صلى الله عليه وسلم) may be a witness over you and you be witnesses over mankind! So perform As-Salat (Iqamat-as-Salat), give Zakat and hold fast to Allah [i.e. have confidence in Allah, and depend upon Him in all your affairs]. He is your Maula (Patron, Lord), what an Excellent Maula (Patron, Lord) and what an Excellent Helper!

(16) So obey not the disbelievers, but strive against them (by preaching) with the utmost endeavour with it (the Qur'an).

(17) And whosoever strives, he strives only for himself. Verily, Allah stands not in need of any of the 'Alamin (mankind, jinn, and all that exists).

(18) And We have enjoined on man to be good and dutiful to his parents; but if they strive to make you join with Me (in worship) anything (as a partner) of which you have no knowledge, then obey them not. Unto Me is your return and I shall tell you what you used to do.

(19) As for those who strive hard in Us (Our Cause), We will surely guide them to Our Paths (i.e. Allah's religion - Islamic Monotheism). And verily, Allah is with the Muhsinun (good doers)."

(20) But if they (both) strive with you to make you join in worship with Me others that of which you have no knowledge, then obey them not; but behave with them in the world kindly, and follow the path of him who turns to Me in repentance and in obedience. Then to Me will be your return, and I shall tell you what you used to do.