Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan dan ve snippets" » "phan dang ve snippets", "phan dau ve snippets", "nhan dan ve snippets", "phan ban ve snippets", "phan dan va snippets", "phan dan viet 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: (((("phan dan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan dan ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan dan ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan dan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.