Perhaps you should try some spelling variations:
"doi trong code snippets" » "doi trong cong snippets", "doi trong co snippets", "doi trong che snippets", "doi tuong code snippets", "dot trong code snippets", "dong trong code snippets", "doi trong code slippers"
"using low java snippets" » "using low java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("using low java snippets") or ("doi trong code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using low java snippets") OR ("doi trong code snippets"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( using low java snippets ) or ( doi trong code snippets ))) or ( locating bug code snippets ))*.