Perhaps you should try some spelling variations:
"quang vinh java snippets" » "quang ninh java snippets", "quang binh java snippets", "quang minh java snippets", "quang trinh java snippets", "quang vinh java slippers"
"dong cong code snippets" » "duong cong code snippets", "dung cong code snippets", "dang cong code snippets", "dong cong cong snippets", "dong cong co snippets", "dong cong che snippets", "dong cong code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("quang vinh java snippets") or ("dong cong code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quang vinh java snippets") OR ("dong cong code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quang vinh java snippets ) or ( dong cong code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quang vinh java snippets") or ("dong cong code snippets"))) or ("locating bug code snippets"))*.