Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham bao cua snippets" » "pham giao cua snippets", "pham van cua snippets", "pham tai cua snippets", "pham ban cua snippets", "pham bai cua snippets", "pham bao lua 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: (((("pham bao cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham bao cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham bao cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham bao cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.