Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phung van so snippets" » "phung van son snippets", "phung van soa snippets", "phung van su snippets", "phuong van so snippets", "nhung van so snippets", "chung van so 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: (((("phung van so 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 van so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phung van so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phung van so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.