Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"len len cong snippets" » "len den cong snippets", "len le cong snippets", "len len con snippets", "len men cong snippets", "lon len cong snippets", "tien len cong 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 len cong 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 len cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( len len cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("len len cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.