Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong viet li slippers" » "cong viec li slippers", "thong viet li slippers", "nang viet li slippers", "cong viet lai slippers", "cong viet gi slippers", "cong triet li slippers", "cong viet li slippery", "cong viet li 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 viet li 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 viet li slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong viet li slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong viet li slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.