Perhaps you should try some spelling variations:
"thi luan tranh slippers" » "thi luan thanh slippers", "thi lan tranh slippers", "thi quan thanh slippers", "thi xuan tranh slippers", "thi loan tranh slippers", "thi luan tranh slippery", "thi luan 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: (((("thi luan 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: (((("thi luan tranh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi luan tranh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi luan tranh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.