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