Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"toc cuong do snippets" » "toc cuong code snippets", "toc muong do snippets", "toc cong do snippets", "quoc cuong do snippets", "toc cuong dao snippets", "toc cuong vo snippets", "toc luong do 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 cuong do 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 cuong do snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( toc cuong do snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc cuong do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.