Perhaps you should try some spelling variations:
"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"
"dong hoc code snippets" » "dong co code snippets", "dong luc code snippets", "dong hoc co snippets", "dong hoc cong snippets", "dong hoc de snippets", "dong hoc code 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 ("dong hoc 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 ("dong hoc code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han using data snippets ) or ( dong hoc code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han using data snippets") or ("dong hoc code snippets"))) or ("locating bug code snippets"))*.