Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"danh cho du snippets" » "danh cho code snippets", "danh cho cu snippets", "danh cho tu snippets", "danh cho duoc snippets", "doanh cho du snippets", "dan cho du snippets", "dinh cho du snippets"
"python using java snippets" » "python using data 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 cho du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh cho du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( danh cho du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh cho du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.