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