The phrase "a highly effective technique" is correct and usable in written English.
You can use it when describing a method or approach that produces significant results or benefits.
Example: "In our research, we found that a highly effective technique for improving productivity is time blocking."
Alternatives: "an extremely efficient method" or "a very successful approach."
Throughout his trilogy, Preston has used a highly effective technique that seems simple but is artful and informed.
Caching is a highly effective technique, which can have multifold impacts on the quality of the software.
In the late 8th century a highly effective technique for representing the human figure was developed, in which modeling was almost completely eschewed and an eloquent system of brightly coloured lines was employed to define the clothed body.
It is a highly effective technique when applied by a well-trained person and can, in many cases, provide adequate short-term life support until more sophisticated treatment is available.
Display of epitopes on virus-like particles (VLPs) is a highly effective technique for enhancing the immunogenicity of antigens that are poorly immunogenic in their native context.
The homotopy perturbation method is also combined with the well-known Laplace transformation method and the variational iteration method to produce a highly effective technique (homotopy perturbation transform method) for handling many nonlinear problems [51].
I'm helped in finding these hidden gems by a simple but highly effective technique.
Increasing compactness of the HX by reducing the channel dimension is fairly a simple but highly effective technique.
A low-tech but highly effective technique for fighting linear bias is data visualization.
The method of electrosurgical incision is seen to be an easily learned, safe, highly effective technique associated with lesser complications.
It's an audacious and, here at least, highly effective technique.
