Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"le doan vo snippets" » "le dan vo snippets", "ly doanh vo snippets", "le hoang vo snippets", "le doan va snippets", "le doan vi snippets", "le doan 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: (((("le doan vo 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 vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( le doan vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("le doan vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.