Perhaps you should try some spelling variations:
"phan mem code snippets" » "phan mem corel snippets", "phan mem cong snippets", "phan lbm code snippets", "phan mem code slippers"
"trong cac code snippets" » "trong cac cong snippets", "trong cac co snippets", "trong cac che snippets", "trong cac code 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: (((("phan mem code snippets") or ("trong cac code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan mem code snippets") OR ("trong cac code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan mem code snippets ) or ( trong cac code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan mem code snippets") or ("trong cac code snippets"))) or ("locating bug code snippets"))*.