Perhaps you should try some spelling variations:
"van hanh pha snippets" » "van hanh phan snippets", "van hanh phap snippets", "van hanh nha snippets", "van thanh pha snippets", "ban hanh pha snippets", "van anh pha snippets", "van hanh pha slippers"
"dung va java snippets" » "dung java java snippets", "dung va java 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 va java snippets") or ("van hanh pha snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung va java snippets") OR ("van hanh pha snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung va java snippets ) or ( van hanh pha snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung va java snippets") or ("van hanh pha snippets"))) or ("locating bug code snippets"))*.