Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huu dan ong snippets" » "huu dang ong snippets", "huu han ong snippets", "huu dat ong snippets", "huu dan dong snippets", "huu dang cong snippets", "huu dan trong 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: (((("huu dan ong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("huu dan ong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huu dan ong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huu dan ong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.