Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sieu dan hoc snippets" » "sieu van hoc snippets", "dien dan hoc snippets", "sieu am hoc snippets", "sieu dan toc snippets", "sieu 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: (((("sieu 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: (((("sieu dan hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sieu dan hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sieu dan hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.