Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van du cac snippets" » "van du code snippets", "van duy cac snippets", "van dau cac snippets", "van de cac snippets", "van duc cac snippets", "van tu cac snippets", "van do cac snippets"
"python using java snippets" » "python using data snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("van du cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van du cac snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van du cac snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van du cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.