Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi dan cuoi snippets" » "doi dam cuoi snippets", "doi dau cuoi snippets", "doi dan nuoi snippets", "hoi dan cuoi snippets", "doi ban cuoi snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 cuoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi dan cuoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi dan cuoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi dan cuoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.