Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using hanh che snippets" » "using hanh code snippets", "song hanh che snippets", "using high che snippets", "using half che snippets", "using han che snippets", "using hanh he snippets", "using hanh nghe snippets"
"dung java java snippets" » "dung va java 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: (((("using hanh che 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 che snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using hanh che snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using hanh che snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.