Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhung ke de snippets" » "nhung ky de snippets", "nhung kien de snippets", "nhung yeu de snippets", "nhung e de snippets", "nhung ke he snippets", "nhung ke do 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 ke de 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 ke de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhung ke de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhung ke de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.