Imo it is not possible for google to detect properly spun content, it is not worth computing power it requires. They can do this using ngrams for example, but it is uses a lot of queries. And for example article spinner I coded beats this algo, so google cant detect that the content is spun. Manual spinning is also good but it takes more than 30 minutes per article.
For this purpose, humans have created numerous rewriting tools to save time and use all words available in the English dictionary. Rewriting tools use millions of synonyms made available to them through artificial intelligence and instructions given by the human mind. If you hire the services of a content writer to rewrite/create content for you, they will charge you a lot. Big organizations can afford this but small startups and students can never afford the services of professional writers.
Select the best quality text/content from online, check it, is it suited with your context? Proper selection is too much important for delivering better new one. Get the content from there! And place it on the editor of SEO WAGON Article rewriter tool. Hey, click on Next and see the effects, the engine will read it and gives you options to rewrite as per your choice, choose appropriate synonyms, or you write your own word. There are thousands of synonyms of each word in our dictionary, let’s go for the quickest way of generating article.
Spinning Speed – How quick can these spinners spin the article above. WordAi took 3 minutes and 48 seconds and SpinerChief III Ultimate using Super Spin in the balanced setting (meaning try to be unique as possible while still being readable) took less than 3 seconds to generate. I’ve had WordAi take 5+ minutes before, they need to speed things up. Clearly SpinnerChief won the speed test.