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