Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ung thu di snippets" » "ung thu dai snippets", "ung thu ai snippets", "ung tu di snippets", "dung thu di snippets", "cung thu di 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: (((("ung thu di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ung thu di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ung thu di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ung thu di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.