Perhaps you should try some spelling variations:
"dang tran manh snippets" » "dang thanh manh snippets", "quang tran manh snippets", "hoang tran manh snippets", "dang tran minh snippets", "dang tran thanh snippets", "dang tran van snippets", "dang tran manh slippers"
"hang java java snippets" » "hang va java snippets", "hang java 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: (((("dang tran manh snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang tran manh snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang tran manh snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang tran manh snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.