Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"luong van du snippets" » "luong van code snippets", "luong va du snippets", "duong van du snippets", "luong vat du snippets", "luong van duy snippets", "luong van dau snippets", "luong van de 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: (((("luong van du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luong van du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( luong van du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong van du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.