Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using data code snippets" » "using java code snippets", "using sat code snippets", "missing data code snippets", "using rate code snippets"
"luan danh cau snippets" » "luan thanh cau snippets", "luan van cau snippets", "luan nang cau snippets", "luan danh dau snippets", "luan danh ca snippets", "luan danh hau 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 data code snippets") or ("luan danh cau snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using data code snippets") OR ("luan danh cau snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( using data code snippets ) or ( luan danh cau snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using data code snippets") or ("luan danh cau snippets"))) or ("locating bugs code snippets"))*.