1.   But those drugs have yielded uncertain results.

2.   Efforts to squelch free music have had uncertain results.

3.   On Tuesday, with the results once again uncertain, children were stilled as members and visitors in the chamber listened carefully while the clerk called the roll.

4.   Result uncertain.

5.   While it worked in other places in Afghanistan, that strategy appears to be having uncertain results here.

6.   Breeding animals, notes Samate, is less complicated than breeding birds -- which is costly and yields uncertain results.

7.   Developing, timing of first results uncertain.

8.   Efforts by Algerian President Abdelaziz Bouteflika have yielded uncertain results.

9.   Efforts by Bouteflika to quell the insurrection have yielded uncertain results.

10.   Germany and Belgium already have begun negotiating with the unions, with uncertain results.