Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"toc viet den snippets" » "toc viet code snippets", "hoc viet den snippets", "thuc viet den snippets", "ngoc viet den snippets", "toc biet den snippets", "toc viet yen snippets", "toc viet dung 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 viet den 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 viet den snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( toc viet den snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc viet den snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.