Perhaps you should try some spelling variations:
"cuoc hang cac snippets" » "cuoc khung cac snippets", "cuoc thanh cac snippets", "quoc thang cac snippets", "cuoc hang ca snippets", "cuoc hang cau snippets", "cuoc bang 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: (((("cuoc hang 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: (((("cuoc hang cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuoc hang cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuoc hang cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.