Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu van cot snippets" » "hieu va cot snippets", "thien van cot snippets", "lieu va cot snippets", "hieu van co snippets", "hieu van chat snippets", "hieu van cong 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: (((("python using java snippets") or ("hieu van cot snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("hieu van cot snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( hieu van cot snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("hieu van cot snippets"))) or ("locating bug code snippets"))*.