Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van thuc can snippets" » "va thuc can snippets", "dan thuc can snippets", "van thu can snippets", "van thuc chan snippets", "van thuc dan snippets", "van thuc van snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("van thuc can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van thuc can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van thuc can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van thuc can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.