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