These items might help:
Griechische Stilübungen I. Übungsbuch zur Formenlehre und Kasussyntax
Griechische Stilübungen II. Übungsbuch zur Verbalsyntax und Satzlehre
Tincani, C. Esercizi di stile e di sintassi greca.
Sidgwick. A First Greek Writer, Elementary Greek Prose Composition, Lectures on Greek Prose Composition.
Donovan. Advanced Greek Prose Composition.
Sargent. Passages for Translation into Greek, Exemplaria Graeca. Selectiond from Passages for Translation into Greek, ΠΡΟΓΥΜΝΑΣΜΑΤΑ Η ΛΕΞΕΩΣ ΑΤΤΙΚΗΣ ΔΙΑ ΠΑΡΑΔΕΙΓΜΑΤΩΝ ΔΙΔΑΧΗ.
Rico. Polis.
Auden. Greek Prose Phrase Book.
Jerran. Graece reddenda.
Frädersdorff. A Copious Phraseological English-Greek Lexicon
Brasse. A Greek Gradus
Pillon. Handbook of Greek Synonymes.
Schmidt. Synonymik der griechischen Sprache 1, 2, 3.