Perhaps you should try some spelling variations:
"phan quoc thinh snippets" » "han quoc thinh snippets", "tran quoc thinh snippets", "toan quoc thinh snippets", "phan quoc trinh snippets", "phan quoc thanh snippets", "phan quoc tinh snippets"
"dung java java slippers" » "dung va java slippers", "dung java java slippery", "dung java java grippers"
"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: (((("phan quoc thinh snippets") or ("dung java java slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan quoc thinh snippets") OR ("dung java java slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan quoc thinh snippets ) or ( dung java java slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan quoc thinh snippets") or ("dung java java slippers"))) or ("locating bug code snippets"))*.