Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhung cuc du snippets" » "nhung cuoc du snippets", "nhung khuc du snippets", "nhung buoc du snippets", "nhung cac du 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 cuc 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 cuc du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhung cuc du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhung cuc du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.