Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"wang luong cac snippets" » "nang luong cac snippets", "hang luong cac snippets", "tang cuong cac snippets", "wang luong cuoc snippets", "wang luong va snippets", "wang luong tai snippets"
"locating bug core snippets" » "locating bug code 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 java code snippets") or ("wang luong cac snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("wang luong cac snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( wang luong cac snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("wang luong cac snippets"))) or ("locating bug core snippets"))*.