The phrase "a return to themes" is correct and usable in written English.
It can be used when discussing the re-exploration or revisiting of specific topics or motifs in a piece of writing, art, or conversation.
Example: "In her latest novel, there is a return to themes of love and loss that were prevalent in her earlier works."
Alternatives: "a revisit of themes" or "a revival of themes".
Some reviewers felt the novel was a successful return to themes explored in Less Than Zero, Lunar Park and American Psycho (1991), while others derided it as "boring" or self-indulgent.
The casting for her newest dance, "Verge," might suggest a return to those themes.
Over the next six weeks of campaigning, Mr. Lieberman spoke far less about religion, but his statements this week seem to signal a return to the themes of that Detroit address.
There is always a return to the theme.
Mr. King rose a few times to signal a return to the theme or to cue a solo, but otherwise stayed on his section work, which is what you'd want to be doing in this band.
As the 2012 presidential campaign began in earnest, Sarkozy trailed Socialist challenger François Hollande in opinion polls and attempted to bolster his numbers with a return to the theme of immigration reform.
The concept was a casual, easygoing abstract with guiding motifs: there were open harmonies, shifting rhythms, group ideas formed in collective splinters and finally a return to the theme.
Lately Sass has been buying oil-service shares in a return to a theme he pursued at the beginning of the century, when he thought oil producers were selling for about half the value of their reserves in the ground.
In other words, a section that sounds one way, then another that sounds the same, then something different, then a return to the theme of the first section.
Following Piye's ideals, Shabaka fostered religious orthodoxy in Amon's cult and a return to ancient cultural themes, which characterized the 25th and 26th dynasties.
