Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"lang van code snippets" » "dang van code snippets", "tang van code snippets", "hoang van code snippets", "lang van de snippets", "lang van hoe snippets", "lang van cong snippets"
"locating bug core snippets" » "locating bug code snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("lang van code snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"lang van code snippets\") OR (\"dung java java snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( lang van code snippets ) OR ( dung java java snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lang van code snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets"))*.