Perhaps you should try some spelling variations:
"using java tu snippets" » "using data tu snippets"
"duong dung code snippets" » "cuong dung code snippets", "dung dung code snippets", "duong dang code snippets", "duong dung cong snippets", "duong dung co snippets", "duong dung de 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 tu snippets") or ("duong dung code snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java tu snippets") OR ("duong dung code snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java tu snippets ) or ( duong dung code snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java tu snippets") or ("duong dung code snippets"))) or ("locating bug core snippets"))*.