Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"do ngo doc snippets" » "do ngon doc snippets", "do ngo duc snippets", "do ngo dac snippets", "do ngoc doc snippets", "do nguoi doc 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: (((("do ngo doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("do ngo doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( do ngo doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("do ngo doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.