Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hao cong da snippets" » "cao cong da snippets", "vao cong da snippets", "ha cong da snippets", "hao cong dan snippets", "hao cong dac snippets", "hao cong dau 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: (((("hao cong 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: (((("hao cong da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hao cong da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao cong da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.