Perhaps you should try some spelling variations:
"dong tranh han snippets" » "dong thanh han snippets", "dong trinh han snippets", "trong tranh han snippets", "dong tranh hang snippets", "dong tranh ban snippets", "dong tranh han slippers"
"dang java java snippets" » "dang va java snippets", "dang 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: (((("dang java java snippets") or ("dong tranh han snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang java java snippets") OR ("dong tranh han snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang java java snippets ) or ( dong tranh han snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang java java snippets") or ("dong tranh han snippets"))) or ("locating bug code snippets"))*.