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"
"dong dan toan snippets" » "dong danh toan snippets", "duong dan toan snippets", "dong san toan snippets", "dong van toan snippets", "dong dan than snippets", "dong manh toan 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 ("dong dan toan snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using data code snippets") OR ("dong dan toan snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( using data code snippets ) or ( dong dan toan snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using data code snippets") or ("dong dan toan snippets"))) or ("locating bugs code snippets"))*.