Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"theo cac don snippets" » "tho cac don snippets", "theo sach don snippets", "thien cac don snippets", "theo cac dan snippets", "theo cac mon snippets", "theo cac doanh 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: (((("theo cac don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("theo cac don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( theo cac don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("theo cac don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.