Perhaps you should try some spelling variations:
"hoi can tranh slippers" » "hoi canh tranh slippers", "hoi tan tran slippers", "hoi van ranh slippers", "khoi can tranh slippers", "hoi dan tranh slippers", "hoc can tranh slippers", "hoi can tranh slippery", "hoi can tranh grippers"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("hoi can tranh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoi can tranh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoi can tranh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi can tranh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.