Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach duoc ca snippets" » "sach nuoc ca snippets", "sach dao ca snippets", "sach dung ca snippets", "sach duoc cac snippets", "sach duoc ma snippets", "sach duoc va 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 duoc ca 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 duoc ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach duoc ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach duoc ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.