Several studies have not been able to show that taking vitamin supplements in addition to a balanced diet helps to prevent disease.

VOA: special.2010.09.14

But they did something that the Mercury astronauts had not been able to do.

VOA: special.2009.06.24

Josee says she has heard about the centers, but that she has not been able to visit one.

VOA: standard.2010.01.26

"And,also,mainstream press have not been able to or shy away from reporting these cases.

VOA: standard.2010.07.06

But Mr.Netanyahu has not been able to placate the settlers or the Palestinians.

VOA: standard.2010.01.03

"All of the major bridges that cross the Swat River have all come down, which meant we have not been able to get to the worst affected areas."

VOA: standard.2010.08.02

She says,'we went to visit, but have not been able to see our relatives.' She said relatives had only been allowed to drop off food at the gate and leave.

VOA: standard.2009.05.25

A major military offensive in South Waziristan is underway and has killed hundreds of Taliban fighters but has not been able to capture or kill Hakimullah Mehsud or any of his key deputies.

VOA: standard.2010.01.09

The defense minister, General Abdul Rahim Wardak, noted that even nations with "100-fold" more security resources, mentioning the United States, Britain,Spain,India, Indonesia and Pakistan, have not been able to prevent all attempted terrorist attacks.

VOA: standard.2009.08.16

He has had a bad summer. His numbers are down, health care is in peril and he has not been able to work his will on his own party, much less the opposition Republicans."

VOA: standard.2009.09.02

Army War College National Security Studies professor Larry Goodson says the U.S.-Karzai relationship has been souring for some time, but that,in his opinion, the Obama team has not been able to formulate any alternative to Hamid Karzai.

VOA: standard.2009.08.03

Mister Ramirez might not have been able to express himself in English, but he could do so with his art.

VOA: special.2010.04.14

Mister Hawass says that scientists have not yet been able to tell what caused the brown spots.

VOA: special.2009.12.15

Kevlar might not have been invented had Stephanie Kwolek been able to seek a career in medicine.

VOA: special.2010.02.09

"These creative methods that people have come up with by using wireless technology will be able to be accessed by millions of people, whereas other technology using electricity and landlines would not have been that accessible."

VOA: special.2011.05.16

We're making people who would have been feeling sick and maybe not being able to work as much - are able to keep their jobs.

VOA: standard.2010.07.21