Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan van von snippets" » "phan van code snippets", "pham van von snippets", "thanh van von snippets", "luan van von snippets", "phan vay von snippets", "phan van van snippets", "phan van dong 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: (((("phan van von snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan van von snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phan van von snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan van von snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.