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