Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"le doan 27 snippets" » "le dan 27 snippets", "ly doanh 27 snippets", "le hoang 27 snippets", "le doan 2017 snippets", "le doan 27 slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("le doan 27 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("le doan 27 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( le doan 27 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("le doan 27 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.