Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dich su cao snippets" » "lich su cao snippets", "dich vu cao snippets", "dich tu cao snippets", "dich cu cao snippets", "dich su co 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: (((("dich su cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dich su cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dich su cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dich su cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.