Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhung duy so snippets" » "nhung quy so snippets", "nhung dung so snippets", "phuong duy so snippets", "nhung duy son snippets", "nhung duc so snippets", "nhung duy ro 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 duy so 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 duy so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhung duy so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhung duy so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.