Perhaps you should try some spelling variations:
"chu tra chat snippets" » "chu tra code snippets", "chu tran chau snippets", "chu tran nhat snippets", "chu hoa chat snippets", "cau tra chat snippets", "chu ra chat snippets", "chu tri chat snippets"
"locating bug core snippets" » "locating bug code 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: (((("python using java snippets") or ("chu tra chat snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("chu tra chat snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( chu tra chat snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("chu tra chat snippets"))) or ("locating bug core snippets"))*.