Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran nen doc snippets" » "tren nen doc snippets", "toan nen doc snippets", "tran hien doc snippets", "tran nang doc snippets", "tran ngon doc 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 nen doc 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 nen doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran nen doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran nen doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.