Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong de cay snippets" » "cong da cay snippets", "cong ve cay snippets", "cong dieu cay snippets", "cong de chay snippets", "cong de cai snippets", "cong de cac 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 de cay 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 de cay snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong de cay snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong de cay snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.