Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using ibm code snippets" » "using rbf code snippets", "using lbm code snippets"
"dung van doan snippets" » "duong van doan snippets", "dung va doan snippets", "dang van doan snippets", "dung van doanh snippets", "dung van toan snippets", "dung van hoan 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: (((("using ibm code snippets") or ("dung van doan snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using ibm code snippets") OR ("dung van doan snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( using ibm code snippets ) or ( dung van doan snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using ibm code snippets") or ("dung van doan snippets"))) or ("locating bugs code snippets"))*.