Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"len cong hon snippets" » "den cong hon snippets", "le cong hon snippets", "len con hon snippets", "len cong hoan snippets", "len cong hoa snippets", "len cong lon 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: (((("len cong hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("len cong hon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( len cong hon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("len cong hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.