Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoi dan hoc snippets" » "hoa dan hoc snippets", "hoc dan hoc snippets", "hoi dap hoc snippets", "hoi van hoc snippets", "hoi dan toc snippets", "hoi dai hoc 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: (((("hoi dan hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoi dan hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoi dan hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi dan hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.