Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong phan le snippets" » "dung phan le snippets", "cong phan le snippets", "dong chan le snippets", "dong pham le snippets", "dong phan mem snippets", "dong phan lap 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 phan 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 phan le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong phan le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong phan le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.