Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc doan cap snippets" » "hoc dan cap snippets", "hoc dai cap snippets", "hoc phan cap snippets", "hoc doanh cao snippets", "hoc dan ca snippets", "hoc toan cao 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: (((("hoc doan cap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc doan cap snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc doan cap snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc doan cap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.