Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"moi dan tran slippers" » "moi dang tran slippers", "moi tan tran slippers", "moi dan than slippers", "hoi dan tran slippers", "doi dan tran slippers", "moi dan tran slippery", "moi dan tran grippers"
"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: (((("moi dan tran slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("moi dan tran slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( moi dan tran slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi dan tran slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.