RavenDB querying one range using another

gistfile1.cs

if (criteria.HasSalaryCriteria)
            {
                var salaryFrom = criteria.SalaryFrom ?? 0;
                var salaryTo = criteria.SalaryTo ?? int.MaxValue;
                
                
                query.AndAlso()
                    .OpenSubclause()

                        // is Criteria.From between Salary.From and Salary.To?
                        .OpenSubclause()
                            .WhereLessThanOrEqual("SalaryFrom", salaryFrom) 
                            .AndAlso()
                            .WhereGreaterThanOrEqual("SalaryTo", salaryFrom) 
                        .CloseSubclause()

                        // OR is Criteria.To between Salary.From and Salary.To
                        .OpenSubclause()
                            .WhereLessThanOrEqual("SalaryFrom", salaryTo) 
                            .AndAlso()
                            .WhereGreaterThanOrEqual("SalaryTo", salaryTo)
                        .CloseSubclause()

                        // OR is Criteria.SalaryRange greater than Salary.Range
                        .OpenSubclause()
                            .WhereGreaterThanOrEqual("SalaryTo", salaryFrom)
                            .AndAlso()
                            .WhereLessThanOrEqual("SalaryTo", salaryTo)
                        .CloseSubclause()

                    .CloseSubclause();
            }