Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoe mot co snippets" » "khoe moi co snippets", "khoan mot co snippets", "hoc mot co snippets", "khoe mot so snippets", "khoe mot cong 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: (((("khoe mot co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoe mot co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoe mot co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoe mot co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.