Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"quoc cac cach snippets" » "duoc cac cach snippets", "luoc cac cach snippets", "quoc cao cach snippets", "quoc cai cach snippets", "quoc cuoc cach 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 cac 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 cac cach snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quoc cac cach snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quoc cac cach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.