Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"con cuong da snippets" » "con duong da snippets", "cong luong da snippets", "doan cuong da snippets", "con cuong dao snippets", "con cuong ma snippets", "con cong da 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 cuong da 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 cuong da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con cuong da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con cuong da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.