Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lenh ve du snippets" » "benh ve du snippets", "lenh va du snippets", "lenh vi du snippets", "lenh ve su snippets", "lenh te du 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: (((("lenh ve du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lenh ve du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lenh ve du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lenh ve du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.