Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khac moi cho snippets" » "khac mo cho snippets", "khac tuoi cho snippets", "hoc moi cho snippets", "khac moi co snippets", "khac hoi cho 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 moi 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 moi cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khac moi cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khac moi cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.