Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan dai moi snippets" » "phan dau moi snippets", "phan day moi snippets", "phan loai moi snippets", "phan doi moi snippets", "phan dai hoi 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 dai moi 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 dai moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan dai moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan dai moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.