Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan mau hop snippets" » "phan dau hop snippets", "phan cau hop snippets", "phan may hop snippets", "phan mau ho snippets", "phan mau chot 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 mau hop 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 mau hop snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan mau hop snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan mau hop snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.