"half successfully" is correct and usable in written English.
You can use it to describe the outcome of an action that had some success, but not complete success. For example: "I attempted to fix the sink, but the job was only half successfully completed."
The Toulouse scrum-half successfully landed another kick to leave Glasgow staring down the barrel at 3-12 dowithith a quarter of the match remaining.
Your brain is divided into two halves, and into each brother's body one half is successfully transplanted.
Of the 92 tries (winter weather cut some attempts short), 47 trips, or about half, were successfully paid for with plastic.
Burns landed all four opportunities while Slade, his opposite at fly-half, missed his first two efforts, the opening shot from 10 metres inside his own half, before successfully slotting another long-distance attempt in the 22nd minute.
The only other mass national weekly to launch even half as successfully, in that period, is Entertainment Weekly, a magazine consisting of nothing but clued-in and obsessive-but-irreverent coverage of stars and the star-making machinery -- Winchell with a B.A. in cultural studies.
NMR and UV Vis spectroscopic analysis of these mutants suggested that half had successfully hindered protein folding that in turn, increased lability and eventually loss of functional iron sulfur clusters.
Eventually they were forcibly removed from the island, but only after a year and a half of successfully occupying it.
She held the championship for approximately two and a half months, successfully defending it against Skye on 10 September, before losing it to Saraya at a World Association of Wrestling (WAW) show in Great Yarmouth, England on 23 September.
In the first year of attempting to obtain medical records, over half were successfully obtained.
Of the GPs' ten highest rated software requirements, more than half were successfully achieved.
Among the PDCs visited, less than half had successfully completed the VRBs and PSRs.
