The phrase "a complex approach that" is correct and usable in written English.
You can use it when describing a method or strategy that involves multiple components or factors.
Example: "In addressing climate change, we need a complex approach that considers economic, social, and environmental factors."
Alternatives: "a multifaceted strategy that" or "an intricate method that".
The measure under consideration would have taken a complex approach that also took into account whether children have access to a good education, a decent home, and a stable family.
Subsurface exploration and field studies on the NE Gulf coast and data gleaned from the literature suggest the need for a complex approach that provides well-documented details of coastal landscape evolution.
This requires a complex approach that accounts for changes in all important thermo-physical properties caused by introduction of nanomaterials to the fluid.
Our participants' opinions indicate that provision of a comprehensive CHD screening service is likely to require a complex approach that crosses the primary-secondary care interface.
A more complex approach that adjusted the samples to be nationally representative would likely also introduce a greater level of uncertainty around any point estimates.
Thus, a more complex approach that is able to extract metal ions from proteins and remove proteins by phase separation is needed.
Sometimes it is possible to reverse the process that caused these 'base lesions', but cells tend to employ a more complex approach that is called the base excision repair (BER) pathway.
Countries may also seek to adopt a more complex approach that takes account of other factors such as the type of intervention, the target population, and the quality and certainty of evidence.
Assessments need to strike a balance between stylised models and more complex approaches that draw more extensively on site-specific information.
More complex approaches that look for better ways to do things at the level of the whole ecosystem, such as agroecology, which may answer more problems and represent more durable solutions, find it harder to grab the imagination.
In addition, culture conditions can influence cellular behavior but increasingly complex approaches that attempt to mimic physiologically relevant conditions, such as three-dimensional culture, scale poorly [12].
