Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"using rbf code snippets" » "using ibm code snippets", "using raw code snippets", "using lbm code snippets", "using rbf code slippers"
"dung viet data snippets" » "nang viet data snippets", "cong viet data snippets", "mang viet data snippets", "dung viet dat snippets", "dung viet ta snippets", "dung lieu data snippets", "dung viet data slippers"

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 rbf code snippets") or ("dung viet data snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using rbf code snippets") OR ("dung viet data snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( using rbf code snippets ) or ( dung viet data snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using rbf code snippets") or ("dung viet data snippets"))) or ("locating bugs code snippets"))*.