Perhaps you should try some spelling variations:
"hoc hoc trinh snippets" » "hoc doc trinh snippets", "hoc hoc tinh snippets", "hoc hoc sinh snippets", "hoc hoa trinh snippets", "toc hoc trinh snippets", "hoc hoi trinh snippets", "hoc hoc trinh slippers"
"dung java java snippets" » "dung va java snippets", "dung 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: (((("hoc hoc trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc hoc trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc hoc trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc hoc trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.