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