Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan tran ve snippets" » "thoan tran ve snippets", "tan tran ve snippets", "hoan tran ve snippets", "toan tran vu snippets", "toan toan ve snippets", "toan tran v 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: (((("toan tran ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toan tran ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan tran ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan tran ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.