Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan quoc le snippets" » "han quoc le snippets", "tran quoc le snippets", "toan quoc le snippets", "phan quoc te snippets", "phan quoc lo snippets", "phan quoc ve 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 quoc 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: (((("phan quoc le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan quoc le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan quoc le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.