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