Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong su ho snippets" » "cong suc ho snippets", "cong sua ho snippets", "cong cu ho snippets", "cong su hoa snippets", "cong su hoc snippets", "cong su pho 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: (((("cong su ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong su ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong su ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong su ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.