Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach che can snippets" » "sach thue can snippets", "sach nha can snippets", "sach cap can snippets", "sach cho can snippets", "sach he can snippets", "sach che quan 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 che can 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 che can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach che can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach che can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.