Perhaps you should try some spelling variations:
"hoc doc trinh snippets" » "hoc doc tinh snippets", "hoc doi trinh snippets", "hoc hoc trinh snippets", "hoc duoc trinh snippets", "hoc do trinh snippets", "hoc doc 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 doc 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 doc trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc doc trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc doc trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.