Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"vai cac hoi snippets" » "vai cac code snippets", "va cac hoi snippets", "tai cac hoi snippets", "voi cac hoi snippets", "vai cac thoi snippets", "vai cac khoi snippets", "vai cau hoi 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: (((("vai cac hoi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vai cac hoi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( vai cac hoi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vai cac hoi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.