Perhaps you should try some spelling variations:
"doi ban toan snippets" » "doi ban code snippets", "doi bai toan snippets", "doi ban than snippets", "doi van toan snippets", "di ban toan snippets", "do ban toan snippets", "dong ban 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 ("doi ban 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 ("doi ban toan snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( doi ban toan snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("doi ban toan snippets"))) or ("locating bug core snippets"))*.