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