Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hao van du snippets" » "hao van code snippets", "dao van du snippets", "ho van du snippets", "cao van du snippets", "hao van duy snippets", "hao van dau snippets", "hao 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: (((("hao 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: (((("hao van du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hao van du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao van du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.