Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong cua lee snippets" » "cong cu lee snippets", "dong cua lee snippets", "huong cua lee snippets", "cong cua le snippets", "cong chul lee 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 cua lee 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 cua lee snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong cua lee snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong cua lee snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.