Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran vu so snippets" » "tran tu so snippets", "tran van so snippets", "trang va so snippets", "tran vu son snippets", "tran va 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: (((("tran vu 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: (((("tran vu so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran vu so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran vu so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.