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