Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong via cua snippets" » "cong va cua snippets", "cong viec cua snippets", "cong viet cua snippets", "cong gia cua snippets", "cong gian cua snippets", "cong giau 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: (((("cong via 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: (((("cong via cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong via cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong via cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.