Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong coc con snippets" » "cong cuoc con snippets", "cong cac con snippets", "cong co con snippets", "cong hoc con snippets", "cong cac cong snippets", "cong hoc cong 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 coc con 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 coc con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong coc con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong coc con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.