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