The phrase "as rather advanced" is not correct and may not be usable in written English.
It seems to be an awkward construction that lacks clarity and proper context.
Example: "The course is designed for students who are as rather advanced in their studies."
Alternatives: "somewhat advanced" or "fairly advanced".
Some of the more established areas of healthcare such as cardiac care or administration are rather advanced in terms of the application of information technologies such as clinical knowledge bases and computer-integrated service delivery models.
They were given to Proust by Geneviève Straus, George Bizet's widow, for New Year's in 1908, when he was a rather advanced thirty-six, and they look as if they were intended for keeping lists.
The rat brain appears to perform rather advanced computations over the visual input, so as to support highly demanding functions, such as transformation-tolerant recognition, multifeatural integration of shape information, configural processing of feature elements, and the like.
"My mother thinks Rupert's work rather advanced," said George.
For the simple reason that its polity has always been rather advanced.
He may even have acquired a university education, for in 1426 he was honoured by the city as "Maistre (Master) Rogier de la Pasture" and began his painting career only the next year at the rather advanced age of 27.
"As evidenced by their strong growth, Aaptiv is running toward becoming the next big name in the fitness tech market, due substantially to a rather advanced technology strategy and approach to growth," said Harley Miller, Vice President, Insight Venture Partners.
He begins as a really important Romantic composer, then he was very influenced by Paul Dukas, with whom he began studying at a rather advanced age in France.
But he was still 14 -- a rather advanced age for a Shih Tzu.
The reported cases in these small series were rather advanced.
