Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong tac sua slippers" » "cong ty sua slippers", "cong tac cua slippers", "cong tac su slippers", "cong tan sua slippers", "cong tac sua slippery", "cong tac sua 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 tac sua 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 tac sua slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong tac sua slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong tac sua slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.