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