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