Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong chan le snippets" » "dong chuan le snippets", "jong chan le snippets", "dong chen le snippets", "dong phan le snippets", "dong thanh le snippets", "dong khoan le 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: (((("dong chan le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong chan le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong chan le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong chan le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.