Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han dong hoi snippets" » "hanh dong hoi snippets", "phan dong hoi snippets", "han duong hoi snippets", "han dong hoc snippets", "han dong hoa snippets", "han tong hop 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: (((("han dong 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: (((("han dong hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han dong hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han dong hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.