Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"deo van long snippets" » "deo van luong snippets", "deo van dong snippets", "deo van cong snippets", "dao van long snippets", "do van long snippets", "de van long 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: (((("deo van long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("deo van long snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( deo van long snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("deo van long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.