Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach doi que snippets" » "sach hoi que snippets", "sach moi que snippets", "sach dao que snippets", "sach loi que snippets", "sach doi quy 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 doi que 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 doi que snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach doi que snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach doi que snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.