Perhaps you should try some spelling variations:
"hang va toan snippets" » "hang va code snippets", "hang van toan snippets", "hang bai toan snippets", "hang tap toan snippets", "nang va toan snippets", "dang va toan snippets", "hanh va 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: (((("hang va toan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang va toan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hang va toan snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang va toan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.