Perhaps you should try some spelling variations:
"using hanh nghe snippets" » "using hanh code snippets", "song hanh nghe snippets", "using high nghe snippets", "using half nghe snippets", "using anh nghe snippets", "using van nghe snippets", "using lang nghe snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java snippets"

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

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