Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc thi toc snippets" » "duc thai toc snippets", "luc thi toc snippets", "duc tho toc snippets", "duc thi tac snippets", "duc thi voc snippets", "duc thi goc 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 thi toc 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 thi toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc thi toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc thi toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.