Perhaps you should try some spelling variations:
"using java a snippets" » "using data a snippets", "using java _ snippets", "using java can snippets"
"dai duong code snippets" » "dai duong co snippets", "dai duong cong snippets", "dai duong che snippets", "dai cuong code snippets", "hai duong code snippets", "dai luong code 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: (((("using java a snippets") OR ("dai duong code snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"using java a snippets\") OR (\"dai duong code snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( using java a snippets ) OR ( dai duong code snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java a snippets") OR ("dai duong code snippets"))) OR ("locating bug core snippets"))*.