Perhaps you should try some spelling variations:
"anh hoang cac snippets" » "thanh hoang cac snippets", "minh hoang cac snippets", "tnhh hoang cac snippets", "anh hang cac snippets", "anh hoang cao snippets", "anh khoang cach snippets"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("anh hoang cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("anh hoang cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( anh hoang cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("anh hoang cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.