Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi dung doc snippets" » "thi huong doc snippets", "thi nhung doc snippets", "thi cong doc snippets", "thi dung doi snippets", "thi dung hoc snippets", "thi dung coc 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: (((("thi dung doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi dung doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi dung doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi dung doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.