Perhaps you should try some spelling variations:
"dang using data snippets" » "dang sinh data snippets", "data using data snippets", "dang ung data snippets", "dang using java snippets", "dang using sat snippets", "dang missing data snippets", "dang using data slippers"
"dung cach thuc snippets" » "dung cac thuc snippets", "dung sach thuc snippets", "dong cach thuc snippets", "dung anh thuc snippets", "dung cac thu snippets", "dung cach thuc slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("dung cach thuc snippets") or ("dang using data snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cach thuc snippets") OR ("dang using data snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cach thuc snippets ) or ( dang using data snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cach thuc snippets") or ("dang using data snippets"))) or ("locating bug code snippets"))*.