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