Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhung bo du snippets" » "nhung bi du snippets", "nhung bai du snippets", "nhung don du snippets", "nhung so du snippets", "nhung bo de snippets", "nhung bo 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: (((("nhung bo 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: (((("nhung bo du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhung bo du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhung bo du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.