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