Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lieu thi ca snippets" » "lieu tai ca snippets", "sieu thi ca snippets", "kieu thi ca snippets", "lieu thi cam snippets", "lieu thi cua snippets", "lieu thi cai 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: (((("lieu thi ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lieu thi ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lieu thi ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lieu thi ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.