Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tao duc hoan snippets" » "tao duc code snippets", "tao duc hoang snippets", "tao duc hoa snippets", "tao duc toan snippets", "tao duoc hoan snippets", "dao duc hoan snippets", "tho duc hoan 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: (((("tao duc hoan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tao duc hoan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tao duc hoan snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tao duc hoan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.