Perhaps you should try some spelling variations:
"luong java java slippers" » "luong va java slippers", "luong java java slippery", "luong java java grippers"
"nang du code snippets" » "nang tu code snippets", "nang luc code snippets", "nang doc code snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("nang du code snippets") or ("luong java java slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nang du code snippets") OR ("luong java java slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang du code snippets ) or ( luong java java slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang du code snippets") or ("luong java java slippers"))) or ("locating bug code snippets"))*.