Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan hinh he snippets" » "phan dinh he snippets", "phan kinh he snippets", "phan minh he snippets", "phan hinh ha snippets", "phan tinh he snippets", "phan chinh che 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: (((("phan hinh 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: (((("phan hinh he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan hinh he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan hinh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.