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