Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"menh van hoc snippets" » "dinh van hoc snippets", "nen van hoc snippets", "benh va hoc snippets", "menh van hoa 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: (((("menh van 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: (((("menh van hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( menh van hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("menh van hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.