Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"con sach che snippets" » "cuon sach che snippets", "cong sach che snippets", "co sach che snippets", "con sach thue snippets", "con sach nha snippets", "con sach cap 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: (((("con sach che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("con sach che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con sach che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con sach che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.