Perhaps you should try some spelling variations:
"phap che code snippets" » "han che code snippets", "phap cfd code snippets", "phap che cong snippets", "phap che code slippers"
"nhanhg java java snippets" » "nhanhg java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("phap che code snippets") or ("nhanhg java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phap che code snippets") OR ("nhanhg java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap che code snippets ) or ( nhanhg java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap che code snippets") or ("nhanhg java java snippets"))) or ("locating bug code snippets"))*.