Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi xay cua snippets" » "khoi bay cua snippets", "phi xay cua snippets", "noi xay cua snippets", "khoi day cua snippets", "khoi tay 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: (((("khoi xay 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: (((("khoi xay cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi xay cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi xay cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.