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