Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach cu chi snippets" » "sach cua chi snippets", "sach tu chi snippets", "sach uu chi snippets", "sach cu cho snippets", "sach ca chi 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 cu chi 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 cu chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach cu chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach cu chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.