Perhaps you should try some spelling variations:
"dac tho trinh snippets" » "dac tho tinh snippets", "dac tao trinh snippets", "dac thi trinh snippets", "duc tho trinh snippets", "dac cho trinh snippets", "dai tho trinh snippets", "dac tho 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: (((("dac tho 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: (((("dac tho trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dac tho trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dac tho trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.