Perhaps you should try some spelling variations:
"trinh san hanh slippers" » "trinh han hanh slippers", "trinh van hanh slippers", "trinh quan hanh slippers", "trinh san thanh slippers", "trinh ban hanh slippers", "trinh san hanh slippery", "trinh san hanh 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: (((("trinh san hanh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh san hanh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh san hanh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh san hanh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.