Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan giay du snippets" » "phan giai du snippets", "phan xay du snippets", "phap giam du snippets", "phan giay da snippets", "phan giao duc snippets", "phan giap duc 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 giay 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: (((("phan giay du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan giay du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan giay du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.