Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hanh ma du snippets" » "hanh mau du snippets", "hanh may du snippets", "hanh va du snippets", "hanh la du snippets", "hanh ma di 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: (((("hanh ma 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: (((("hanh ma du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hanh ma du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hanh ma du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.