Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pho han du snippets" » "pho phan du snippets", "pho ha du snippets", "pho hai du snippets", "pho han dau snippets", "pho van du snippets", "pho han tu 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: (((("pho han du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pho han du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pho han du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pho han du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.