Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"can van tran snippets" » "can van trang snippets", "can van tranh snippets", "can van tuan snippets", "cac van tran snippets", "can ban tran snippets", "tan van tran snippets", "can van tran 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: (((("can van tran snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("can van tran snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can van tran snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can van tran snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.