Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using data java snippets" » "using java java snippets", "using sat java snippets", "missing data java snippets"
"van dong quoc snippets" » "van dang quoc snippets", "van dong duoc snippets", "van hoang quoc 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 data java snippets") or ("van dong quoc snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using data java snippets") OR ("van dong quoc snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using data java snippets ) or ( van dong quoc snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using data java snippets") or ("van dong quoc snippets"))) or ("locating bug core snippets"))*.