Perhaps you should try some spelling variations:
"phi tap toan snippets" » "phi tap code snippets", "phi tap doan snippets", "phi tap quan snippets", "phi bai toan snippets", "phi thap toan snippets", "pha tap toan snippets", "phi tai 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 tap 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 tap toan snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( phi tap toan snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("phi tap toan snippets"))) or ("locating bug core snippets"))*.