Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"luan van trinh snippets" » "luan van thinh snippets", "luan van tinh snippets", "luan dan trinh snippets", "quan van trinh snippets", "lan van trinh snippets"
"dung java java slippers" » "dung va java slippers", "dung java java slippery", "dung java java grippers"

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: (((("luan van trinh snippets") or ("dung java java slippers"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luan van trinh snippets") OR ("dung java java slippers"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( luan van trinh snippets ) or ( dung java java slippers ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan van trinh snippets") or ("dung java java slippers"))) or ("locating bugs code snippets"))*.