Perhaps you should try some spelling variations:
"luong java java snippets" » "luong va java snippets"
"dong trong co snippets" » "duong trong co snippets", "dung trong co snippets", "cong trong co snippets", "dong trong ca snippets", "dong trong cong snippets", "dong trong cuoc 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: (((("luong java java snippets") or ("dong trong co snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luong java java snippets") OR ("dong trong co snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luong java java snippets ) or ( dong trong co snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong java java snippets") or ("dong trong co snippets"))) or ("locating bug code snippets"))*.