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