Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc quan doc snippets" » "luc luan doc snippets", "tac quan doc snippets", "qua quan doc snippets", "luc quan doi snippets", "luc quan dac snippets", "luc quan doan 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: (((("luc quan doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc quan doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc quan doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc quan doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.