Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan tinh he snippets" » "doan hinh he snippets", "ban tinh he snippets", "quan tinh he snippets", "doan trinh he snippets", "doan tinh ha snippets", "doan tich 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: (((("doan tinh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan tinh he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan tinh he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan tinh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.