Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong hon hoc snippets" » "cong hoan hoc snippets", "cong hoa hoc snippets", "cong lon hoc snippets", "cong hon hop snippets", "cong hoi hoc 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 hon hoc 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 hon hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong hon hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong hon hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.