Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi dung le snippets" » "khoa dung le snippets", "hoi dung le snippets", "khoi dong le snippets", "khoi dung len snippets", "khoi dung he snippets", "khoi dung de 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: (((("khoi dung le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi dung le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi dung le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi dung le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.