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