Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tang dan du snippets" » "tang dan code snippets", "tang van du snippets", "tung dan du snippets", "tang luan du snippets", "tang dan dau snippets", "tang danh du snippets", "tang dan su 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: (((("tang dan 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: (((("tang dan du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tang dan du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tang dan du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.