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