What is the Islamic concept about conflict management (to solve the conflicts), on social life, economy and political issues in society especially in individuals what usually happened? Please, give me from Qur'an, Hadith and intellectual texts detailed answer on my e-mail.

Praise be to Allah, the Lord of the Worlds; and may His blessings and peace be upon our Prophet Muhammad and upon all his Family and Companions.

Islam is the religion of Allah that He has chosen for His servants. It is a way of life which brings happiness and comfort to people if they follow it not only in this life but also in the Hereafter. Allah has put in Islam a solution to all problems and in various life aspects. Talking about this will take a long time. Islam, for instance, calls for justice and prescribes it among its obligations. It also forbids aggressions and oppressions. It emphasizes and calls for tolerance and forgiveness. Allah rewards the person who forgives and settles matters. Allah also urges the conflicting parties to return to Him and get the rule from Him, i.e. from the Qur'an and Sunnah. Allah Says: {And in whatsoever ye differ, the verdict therein belongeth to Allah. …} [42: 10]. Allah also Says: {… and if ye have a dispute concerning any matter, refer it to Allah and the messenger if ye are (in truth) believers in Allah and the Last Day. …} [4: 58].
The Sharia calls for mediation in settling conflicts. Allah Says talking about the spouses: {… appoint an arbiter from his folk and an arbiter from her folk. If they desire amendment Allah will make them of one mind. …} [4: 35].
In addition, we would like to refer you to the book "Fundamentals of Dawa" written by Dr. Abd Al Karim Zeidane . In this book, the author talked about the Islamic political, economic, social systems. You will get in this book - if Allah wills - what will make you satisfied. There are also many other good references that deal will all aspects of life and all subjects you mentioned in your question including "The Islamic political system" by Dr. Munir Al Bayaty and "The Islamic economy" by Dr. Ali Saluss and many more.
Allah knows best.