Perhaps you should try some spelling variations:
"van phuong java snippets" » "van phuong va snippets", "van phong java snippets", "va phuong java snippets", "van chuong java snippets", "van phuong java slippers"
"dong cung code snippets" » "dong chung code snippets", "dong hung code snippets", "dong cong code snippets", "dong cung 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: (((("van phuong java snippets") or ("dong cung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van phuong java snippets") OR ("dong cung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van phuong java snippets ) or ( dong cung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van phuong java snippets") or ("dong cung code snippets"))) or ("locating bug code snippets"))*.