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