Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan tu hon snippets" » "doan thu hon snippets", "dan tu hon snippets", "toan tu hon snippets", "doan tu chon snippets", "doan tuc hon snippets", "doan tu hoc 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: (((("doan tu hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan tu hon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan tu hon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan tu hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.