Perhaps you should try some spelling variations:
"han tap trinh snippets" » "han lap trinh snippets", "han tap tinh snippets", "han tao trinh snippets", "han tai trinh snippets", "toan tap trinh snippets", "nhan tai trinh snippets", "han tap trinh slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("han tap trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han tap trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han tap trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han tap trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.