Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"toc mang cua snippets" » "toc mang code snippets", "hoc mang cua snippets", "toc mong cua snippets", "toc muong cua snippets", "toc manh cua snippets", "toc dung cua snippets", "toc ban cua 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: (((("toc mang cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc mang cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( toc mang cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc mang cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.