Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"doi ca doi 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"

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

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