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