Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"len hoi cho snippets" » "len choi cho snippets", "len thoi cho snippets", "le hoi cho snippets", "len hoi chu snippets", "len hoi co snippets", "len hoc cho 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 hoi cho 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 hoi cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( len hoi cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("len hoi cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.