Is this sentence grammatically correct
A multinational search effort focusing on the southern Indian Ocean and led by Australia has yet to produce any concrete clues in the case,
Yes, I think so. If you wish it to be absolutely perfect, you may "correct" these:
1. Use a full stop instead.
2. Use "clues to the case" instead of "clues in the case".
31 Temmuz 2015
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Hâlâ cevap bulamadın mı?
Sorularını yaz ve ana dil konuşanlar sana yardım etsin!