Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh dau du snippets" » "lanh dao du snippets", "hang dau du snippets", "xang dau du snippets", "danh dau tu snippets", "danh day du snippets", "danh dao du 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 dau du 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 dau du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh dau du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh dau du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.