Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach ha hoi snippets" » "sach nha hoi snippets", "sach han hoi snippets", "sach xa hoi snippets", "sach hoa hoi snippets", "sach ha noi 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: (((("sach ha 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: (((("sach ha hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach ha hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach ha hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.