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