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