Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong duoc si slippers" » "dong quoc si slippers", "dong duong si slippers", "trong duoc si slippers", "dong duoc si slippery", "dong duoc si 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: (((("dong duoc si slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong duoc si slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong duoc si slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong duoc si slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.