Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan hoa hoi snippets" » "luan hoan hoi snippets", "luan khoa hoi snippets", "luan hoat hoi snippets", "luan hoa hoc snippets", "luan hoa doi 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: (((("luan hoa hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luan hoa hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan hoa hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan hoa hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.