What is the difference between manage to do " and "try to do"? thank you What is the difference between manage to do " and "try to do"? thank you

why don't they work/ Recently, the boss went to Indonesia on business, he invested to open a company which is engaged in mining gold and other mineral producing, but he called us to write three reports about financing with a investment company，so it needs account departmen, producing departmen, office, sals departmen to work together, but three days late, they didn't want to work on these reports with all kinds of excuses, I am very vexatiouswrought-up ，if we can't finish these reports, I won't know what the result is when the boss comes.

A terrible thing today I got a law document from a lawyer in Beijing. He came to my company for an officer business. a little long, but I want to make it clear, two years ago, a high engineer left the company for money, before he was away, he signed a written agreement to keep our producing propritary processesand technologies secrets, and he got a sum of money for his promise. but several months later, he broke his faith, he accepted a job as the vice general manager in another company which produces the same product as ours, the exchanging condition is that he must public the propritaries to help that factory to make the same products. but soon with the decrease of synthetic mica needing in the market, we realised that what was the problem, he that a person give up his moral standards for money refused the persuade many times, at last he was sent to the court by us and was sentenced to a year in prison. but after he was free, he also helps that company to produce the same goods. Forbearance we only prosecute him again, for this, we callin a lawyer from Beijign as our adviser. I got the lawyer's agreement today. but I didn't find the first original manuscript， I was nervos, but lucky I got it in the back of my drawer, after checking them carefully, there is no difference between them, after signing the name of the company and sealing， I posted it out, and now I was relaxed, I wish to get a good spuuer before having a good sleeping.