Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"cuon van canh snippets" » "cuoi van canh snippets", "chon van canh snippets", "duong van canh snippets", "cuon van anh snippets", "cuon van hanh snippets", "cuon van manh 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: (((("cuon van canh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cuon van canh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuon van canh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuon van canh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.