Perhaps you should try some spelling variations:
"hoang can tranh slippers" » "hoang van tranh slippers", "hoang cao tranh slippers", "hoang san tranh slippers", "hoang canh tranh slippers", "hoang tan tran slippers", "hoang van ranh slippers", "hoang can tranh slippery", "hoang 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: (((("hoang 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: (((("hoang can tranh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoang can tranh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoang can tranh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.