Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huu manh cho snippets" » "huu hanh cho snippets", "hung manh cho snippets", "huu han cho snippets", "huu danh cho snippets", "huu manh ho snippets", "huu anh 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: (((("huu manh 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: (((("huu manh cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huu manh cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huu manh cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.