Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran quy doi snippets" » "tran duy doi snippets", "tran quoc doi snippets", "tran thuy doi snippets", "tran quy don snippets", "tran quan doi 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 quy doi 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 quy doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran quy doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran quy doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.