Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khap su cua snippets" » "phap su cua snippets", "thap su cua snippets", "khat sua cua snippets", "khap hu cua snippets", "khap tu cua snippets", "khap vu 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: (((("khap su 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: (((("khap su cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khap su cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khap su cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.