Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tru hoc phe snippets" » "tu hoc phe snippets", "tri hoc phe snippets", "trung hoc phe snippets", "tru hoc pho snippets", "tru hoc he snippets", "tru hoc phi 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: (((("tru hoc phe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tru hoc phe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tru hoc phe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tru hoc phe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.