| unsolved murder | 5.27 | Including those offered for unsolved murders. | ||
| unsolved case | 2.04 | The victim is left with an unsolved case. | ||
| unsolved mystery | 1.91 | Unsolved mystery? | ||
| unsolved killing | 1.71 | Another unsolved killing was of a journalist, Shefet Popova. | ||
| unsolved crime | 1.65 | Unsolved crimes haunt police and community members. | ||
| unsolved homicide | 0.86 | Police are reviewing all unsolved homicides and missing persons cases in the area. | ||
| unsolved problem | 0.86 | Riemann is another outstanding unsolved problem. | ||
| unsolved kidnapping | 0.46 | Rio police, under fire for a wave of unsolved kidnappings, simmered with envy. | ||
| unsolved assassination | 0.39 | They will also press investigations into the federal housing agency and unsolved political assassinations. | ||
| unsolved bombing | 0.39 | Tempers rise over unsolved anti-Jewish bombings. | ||
| unsolved slayings | 0.39 | Entrants are sharing their own tragedies, from terminal illnesses to unsolved slayings. | ||
| unsolved issue | 0.33 | There were many unsolved issues. | ||
| unsolved bank | 0.26 | He is also wanted by Interpol for unsolved bank robberies and murder in Europe. | ||
| unsolved death | 0.26 | FBI agents would not say Wednesday which unsolved deaths were under investigation. | ||
| unsolved disappearance | 0.26 | The document also pointed to state involvement in the unsolved disappearance of three leading UDF members. |