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