Perhaps you should try some spelling variations:
"hoc thanh cac snippets" » "hoc nhanh cac snippets", "hoan thanh cac snippets", "hoc phan cac snippets", "hoc hanh cac snippets", "hoc thanh bac snippets", "hoc thanh ca snippets"
"dung va java snippets" » "dung java 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: (((("dung va java snippets") or ("hoc thanh cac snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung va java snippets") OR ("hoc thanh cac snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung va java snippets ) or ( hoc thanh cac snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung va java snippets") or ("hoc thanh cac snippets"))) or ("locating bug code snippets"))*.