Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh dao do snippets" » "doanh dao do snippets", "lanh dao do snippets", "danh dau do snippets", "danh dao o snippets", "danh dao ho snippets", "danh dao dong 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: (((("danh dao do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh dao do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh dao do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh dao do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.