Perhaps you should try some spelling variations:
"phung duoc 2 snippets" » "phung duc 2 snippets", "phung quoc 2 snippets", "thuong duoc 2 snippets", "phung doc 2 snippets", "phung duoc 1 snippets", "phung duoc 9 snippets", "phung duoc 2 slippers"
"python using java snippets" » "python using data snippets", "python using java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("phung duoc 2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phung duoc 2 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phung duoc 2 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phung duoc 2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.