Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dieu tra con snippets" » "dieu tri con snippets", "kiem tra con snippets", "dieu cua con snippets", "dieu tra cong snippets", "dieu tra mon snippets", "dieu ta con 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: (((("dieu tra con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dieu tra con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dieu tra con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dieu tra con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.