Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong dung so snippets" » "cuong dung so snippets", "cong dong so snippets", "cong luong so snippets", "cong dung co snippets", "cong dung mo snippets", "cong dung cho 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 dung so 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 dung so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong dung so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong dung so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.