The phrase "a semblance of structure" is correct and usable in written English.
It can be used to describe something that has a slight or superficial organization or arrangement, often implying that it lacks true or complete structure.
Example: "The report had a semblance of structure, but it was difficult to follow due to the disorganized content."
Alternatives: "an appearance of order" or "a hint of organization".
The post gives his day a semblance of structure.
But these people, including politicians who intend to run for president, cautioned that the military remained the country's only institution with even a semblance of structure, manpower and more-or-less standard operating procedures.
The same black-and-white pop-up tents, dotted with sponsor logos, that had littered the beach in previous contests sprung up again, offering a semblance of structure in between the concrete support Ts that used to hoist the boardwalk.
It's perhaps not how Kobe envisioned the end of his career, on a failing Laker team careening towards another lottery pick without a semblance of structure, although recent news of his desire to play in next year's Olympics could offer him a respite.
Davis gave the band two chords, and "there was a semblance of structures, but they were a little fragmented compared to what we usually played".
The paintings of Picasso are angular, controlled, mathematical even, whilst Fauvism is known for its frivolity, for its free use of bright, shiny colors and spontaneous brushstrokes, where all semblance of structure and order has left the building.
Drinking, though disapproved of by middle-class critics, was an important recreational outlet, bringing men together in a semblance of community structure.
The apparently rambling structure of the book is in fact bracketed by opening and closing sections, arranged like the rest as letters, which "give form and scale and even a semblance of narrative structure to what would otherwise have been a shapeless anthology".
There was a semblance of authority and structure there that was so far away in 2006," said Walter, who is now pursuing a mechanical engineering degree at UCLA.
What children most need as they try to modulate their parent's divorce is a semblance of order, constancy, structure, and predictability.
