Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doi dan cao snippets" » "doi dan code snippets", "hoi dan cao snippets", "doi ban cao snippets", "doi dau cao snippets", "doi dan ca snippets", "doi dam cao snippets", "doi dan bao 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 dan cao 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 dan cao snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doi dan cao snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi dan cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.