Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khan can ve snippets" » "khan cap ve snippets", "khang chan ve snippets", "khanh van ve snippets", "khan ban ve snippets", "khan dan ve snippets", "khan can va 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: (((("khan can ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khan can ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khan can ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khan can ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.