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