Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dai cong de snippets" » "dai cuong de snippets", "tai cong de snippets", "doi cong de snippets", "dai cong da snippets", "dai cong ve snippets", "dai cong dieu 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: (((("dai cong de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dai cong de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dai cong de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dai cong de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.