Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khuc hat con snippets" » "khac hau con snippets", "thuc ha con snippets", "khuc hai con snippets", "khuc hat mon snippets", "khuc vat 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: (((("khuc hat 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: (((("khuc hat con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khuc hat con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khuc hat con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.