Perhaps you should try some spelling variations:
"khoang tho cac snippets" » "khoang thoi cac snippets", "khoang thi cac snippets", "hoang thi cac snippets", "khoang cho cac snippets", "khoang tho ca snippets", "khoang thong cac 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: (((("khoang tho cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoang tho cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoang tho cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoang tho cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.