Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khac vi con snippets" » "khac di con snippets", "khac ve con snippets", "khac dai con snippets", "khac vit con snippets", "khac voi con snippets", "khac va con 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: (((("khac vi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khac vi con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khac vi con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khac vi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.