Perhaps you should try some spelling variations:
"hoc quan tinh snippets" » "hoc quan binh snippets", "hoc quang ninh snippets", "hoc quang binh snippets", "hoc dan tinh snippets", "tac quan tinh snippets", "hoc phan tinh snippets", "hoc quan tinh 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 quan tinh 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 quan tinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc quan tinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc quan tinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.