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