Perhaps you should try some spelling variations:
"learning-based tool orientation techniques" » "learning-based tool augmentation techniques", "learning-based tool segmentation techniques", "learning-based tool imputation techniques", "learning-based _ orientation techniques", "learning-based ebsd orientation techniques", "learning-based two orientation techniques"
"learning-based mri simulation techniques" » "learning-based mri imputation techniques", "learning-based mri mitigation techniques", "learning-based mri segmentation techniques", "learning-based _ simulation techniques", "learning-based a simulation techniques", "learning-based 3d simulation techniques", "learning-based mil simulation techniques"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("learning-based mri simulation techniques") OR ("learning-based tool orientation techniques"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"learning-based mri simulation techniques\") OR (\"learning-based tool orientation techniques\"))*".
• Removing quotes may allow a broader search: (( learning-based mri simulation techniques ) OR ( learning-based tool orientation techniques ))*.