Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"con hat cheo snippets" » "con thuat cheo snippets", "con nham cheo snippets", "con nhat nheo snippets", "cong hat cheo snippets", "cot hat cheo snippets", "co hat cheo 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: (((("con hat cheo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("con hat cheo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con hat cheo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con hat cheo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.