Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hap moi cong snippets" » "hap noi cong snippets", "hap voi cong snippets", "hap tai cong snippets", "phap moi cong snippets", "hai moi cong snippets", "thap muoi 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: (((("hap moi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hap moi cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hap moi cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hap moi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.