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