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