★ THIS IS A SECOND ATTEMPT. The first search returned nothing usable —
the results showed other kinds of structures instead of the one needed.
The cause is almost always a query that spread across several sub-parts
of the description at once.

So this time: pick the SINGLE MAIN STRUCTURE from the description — the
one thing that must be recognisable — and write the instruction about
THAT ALONE. Drop every secondary part, fitting, support and surrounding
element from the queries; they can be omitted entirely.

Use the plainest, most common everyday word local people use for that one
structure, on its own. A short, plain, single-subject noun is what finds
real ordinary examples; a compound phrase pulls in whatever shares its
words. Do not add material words, support words, or part names that could
match a different subject entirely.