Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc dan coc snippets" » "duc dan coc snippets", "duoc ban coc snippets", "duoc dai coc snippets", "duoc dan toc snippets", "duoc dan hoc snippets", "duoc dan cac 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: (((("duoc dan coc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoc dan coc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc dan coc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc dan coc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.