Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"quoc cai cach snippets" » "quoc oai cach snippets", "quoc cac cach snippets", "quoc cao cach snippets", "quoc loi cach snippets", "quoc tai cac snippets", "quoc va cach 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: (((("quoc cai cach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quoc cai cach snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quoc cai cach snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quoc cai cach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.