Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cua dan doan snippets" » "cua dan code snippets", "cua dan toan snippets", "cua tan doan snippets", "cua van doan snippets", "cua dang doan snippets", "cua ban doan snippets", "ca dan doan 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: (((("cua dan doan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua dan doan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cua dan doan snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua dan doan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.