Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuat co lon snippets" » "thuat do lon snippets", "thuat o lon snippets", "thuat cho lon snippets", "thuat co loi snippets", "thuat co don 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: (((("thuat co lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thuat co lon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuat co lon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuat co lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.