Perhaps you should try some spelling variations:
"phi duc toan snippets" » "phi duc code snippets", "phi duc tan snippets", "phi duc ton snippets", "phi duc hoan snippets", "pham duc toan snippets", "phan duc toan snippets", "chi duoc toan snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"

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 ("phi duc toan snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("phi duc toan snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( phi duc toan snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("phi duc toan snippets"))) or ("locating bug core snippets"))*.