Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"manh mo hoc snippets" » "manh ho hoc snippets", "hanh mo hoc snippets", "hanh mot hoc snippets", "manh mon hoc snippets", "manh co 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: (((("manh mo 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: (((("manh mo hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( manh mo hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("manh mo hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.