Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dieu dan hoi snippets" » "dieu danh hoi snippets", "dien dan hoi snippets", "dieu can hoi snippets", "dieu dan hoc snippets", "dieu dai hoi snippets", "dieu dang khoi 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 dan hoi 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 dan hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dieu dan hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dieu dan hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.