Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sat phan le snippets" » "sat nhan le snippets", "vat phan le snippets", "xuat phan le snippets", "sat pham le snippets", "sat phan mem snippets", "sat 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: (((("sat 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: (((("sat phan le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sat phan le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sat phan le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.