Perhaps you should try some spelling variations:
"using data code snippets" » "using java code snippets", "using sat code snippets", "missing data code snippets", "using rate code snippets"
"cong trinh cau snippets" » "cong trinh chat snippets", "cong trinh chao snippets", "cong trinh tu snippets"
"locating bug core snippets" » "locating bug 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: (((("using data code snippets") or ("cong trinh cau snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using data code snippets") OR ("cong trinh cau snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using data code snippets ) or ( cong trinh cau snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using data code snippets") or ("cong trinh cau snippets"))) or ("locating bug core snippets"))*.