Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"trinh toan he snippets" » "trinh toan code snippets", "tinh toan he snippets", "thanh toan he snippets", "trinh han he snippets", "trinh toan ho snippets", "trinh toan ke snippets", "trinh toan ve snippets"
"dang java java snippets" » "dang va java 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: (((("dang java java snippets") or ("trinh toan he snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang java java snippets") OR ("trinh toan he snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dang java java snippets ) or ( trinh toan he snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang java java snippets") or ("trinh toan he snippets"))) or ("locating bug core snippets"))*.