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