Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong goi doi snippets" » "cong goi code snippets", "cong noi doi snippets", "cong soi doi snippets", "dong goi doi snippets", "cong voi doi snippets", "cong hoi doi snippets", "cong moi doi 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: (((("cong goi doi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong goi doi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong goi doi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong goi doi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.