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