Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan benh he snippets" » "phau benh he snippets", "phan banh he snippets", "phong benh he snippets", "phan benh heo snippets", "phan benh ve snippets", "phan benh theo 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 benh 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 benh he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan benh he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan benh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.