Perhaps you should try some spelling variations:
"cong huong code snippets" » "cong thuong code snippets", "cong luong code snippets", "cong hung code snippets", "cong huong co snippets", "cong huong com snippets", "cong huong code slippers"
"han using data snippets" » "han using java snippets", "han using sat snippets", "han missing data snippets", "han ung data snippets", "h2o using data snippets", "han ping data snippets", "han using data slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs 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: (((("han using data snippets") or ("cong huong code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han using data snippets") OR ("cong huong code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han using data snippets ) or ( cong huong code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han using data snippets") or ("cong huong code snippets"))) or ("locating bug code snippets"))*.