Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"trinh voi do snippets" » "trinh voi code snippets", "trinh hoi do snippets", "trinh vi do snippets", "trinh boi do snippets", "trinh voi doi snippets", "trinh voi ho snippets", "trinh toi 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: (((("trinh voi 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: (((("trinh voi do snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( trinh voi do snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh voi do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.