Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"con chi hoan snippets" » "con choi hoan snippets", "con thi hoan snippets", "con chi hoa snippets", "con chim hoan snippets", "cong chi hoan snippets", "can chi hoan 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 chi hoan 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 chi hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con chi hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con chi hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.