Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tue phan le snippets" » "tue nhan le snippets", "tu phan le snippets", "thep phan le snippets", "tue pham le snippets", "tue phan mem snippets", "tue phan lap 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: (((("tue phan le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tue phan le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tue phan le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tue phan le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.