Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets"
"duong anh toan snippets" » "duong manh toan snippets", "duong xanh toan snippets", "duong vanh toan snippets", "duong anh tuan snippets", "duong thanh toan 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: (((("duong anh toan snippets") or ("data using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong anh toan snippets") OR ("data using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong anh toan snippets ) or ( data using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong anh toan snippets") or ("data using java snippets"))) or ("locating bug code snippets"))*.