Perhaps you should try some spelling variations:
"hoang cao cau snippets" » "hoang bao cau snippets", "hoang hao cau snippets", "hoang thao cau snippets", "hoang cao cap snippets", "hoang co cau snippets", "hoang tao cau 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: (((("hoang cao 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: (((("hoang cao cau snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoang cao cau snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoang cao cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.