Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phen dung co snippets" » "phan dung co snippets", "phen dang co snippets", "phung dung co snippets", "phen dung cho snippets", "phen dung cong snippets", "phen dung cua 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: (((("phen dung co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phen dung co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phen dung co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phen dung co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.