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