Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"cac kieu cua snippets" » "cach tieu cua snippets", "cac yeu cua snippets", "tac kiem cua snippets", "cac dieu cua snippets", "cac bieu cua snippets", "cac hieu cua 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: (((("cac kieu cua snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac kieu cua snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac kieu cua snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac kieu cua snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.