Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan toan von snippets" » "dan toan code snippets", "van toan von snippets", "dan than von snippets", "manh toan von snippets", "dan toan ban snippets", "dan toan hoc snippets", "dan toan ho snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dan toan 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: (((("dan toan von snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dan toan von snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan toan von snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.