Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"co hoat don snippets" » "co hoat dong snippets", "co hoat doi snippets", "co hoa don snippets", "cao hoat don snippets", "che hoat don snippets", "toi hoat don 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: (((("co hoat 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: (((("co hoat don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( co hoat don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("co hoat don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.