Perhaps you should try some spelling variations:
"kha trinh tu snippets" » "qua trinh tu snippets", "ha tinh tu snippets", "tra trinh tu snippets", "kha trinh ky snippets", "kha trinh do snippets", "kha trinh tu 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: (((("kha trinh tu snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kha trinh tu snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kha trinh tu snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kha trinh tu snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.