Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan van ke snippets" » "pham van ke snippets", "thanh van ke snippets", "luan van ke snippets", "phan van ket snippets", "phan van de snippets", "phan van ky 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: (((("python using java snippets") or ("phan van ke snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("phan van ke snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( phan van ke snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("phan van ke snippets"))) or ("locating bug code snippets"))*.