Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doi van cac snippets" » "doi van code snippets", "do van cac snippets", "doi va cac snippets", "doi ban cac snippets", "doi van hac snippets", "doi van cau snippets", "doi van bac 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 van cac 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 van cac snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doi van cac snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi van cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.