Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"doc dieu can snippets" » "doc hieu can snippets", "hoc dieu can snippets", "soc dieu can snippets", "doc dieu hanh snippets", "doc tiep can snippets", "doc dieu 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: (((("doc dieu can snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc dieu can snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc dieu can snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc dieu can snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.