Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doi ca doi snippets" » "doi ca code snippets", "doi cua doi snippets", "doi cay doi snippets", "duoi ca doi snippets", "doi cau doi snippets", "doi cac doi snippets", "doi va doi snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("doi ca doi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi ca doi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doi ca doi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi ca doi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.