Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao va du snippets" » "nano va du snippets", "tao va du snippets", "cao va du snippets", "nao va dau snippets", "nao va su snippets", "nao va tu 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: (((("nao va du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nao va du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao va du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao va du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.