Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hai van cuoc snippets" » "hai va cuoc snippets", "hai van cuc snippets", "hai van duoc snippets", "thai van cuoc snippets", "ha van cuoc snippets", "hai tan cuoc 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: (((("hai van cuoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hai van cuoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai van cuoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai van cuoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.