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