Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoan cam he snippets" » "khoa cam he snippets", "khoan va he snippets", "phan cam he snippets", "khoan cam khe snippets", "khoan cac he snippets", "khoan nam he 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: (((("khoan cam he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoan cam he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoan cam he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoan cam he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.