Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc bo long snippets" » "duc bo cong snippets", "duc bo song snippets", "duc do long snippets", "duc bao long snippets", "duc mo long snippets", "duc so long 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 bo long 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 bo long snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc bo long snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc bo long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.