Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"may tru hoc snippets" » "may tu hoc snippets", "may tre hoc snippets", "may thuy hoc snippets", "may tri hoc snippets", "may trung 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: (((("may tru 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: (((("may tru hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( may tru hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("may tru hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.