Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham cac doi snippets" » "phan cac doi snippets", "pham ca doi snippets", "pham can doi snippets", "pham cac dai snippets", "pham cac toi snippets", "pham cau doi 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 cac doi 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 cac doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham cac doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham cac doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.