Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dai luu cong snippets" » "dai luu cuong snippets", "dai cuu cong snippets", "dai luu dong snippets", "dan luu cong snippets", "dai huu cong snippets", "dai luan 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: (((("dai luu cong 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 luu cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dai luu cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dai luu cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.