Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nha moi cho snippets" » "nha noi cho snippets", "nhap mon cho snippets", "nghe moi cho snippets", "nha moi co snippets", "nha hoi cho snippets", "nha mo 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: (((("nha moi 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: (((("nha moi cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nha moi cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nha moi cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.