Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc hai cong snippets" » "duc thai cong snippets", "duc tai cong snippets", "duc hai long snippets", "cuc hai cong snippets", "duc dai cong snippets", "duc hau 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 ("duc hai 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 ("duc hai cong snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( duc hai cong snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("duc hai cong snippets"))) or ("locating bug code snippets"))*.