Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhung co don snippets" » "nhung con don snippets", "nhung bo don snippets", "chung co don snippets", "nhung co dong snippets", "nhung co dan snippets", "nhung co dot 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 co don 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 co don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhung co don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhung co don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.