Perhaps you should try some spelling variations:
"quang hung code snippets" » "quang dung code snippets", "quang phuong code snippets", "quang trung code snippets"
"dong java java slippers" » "dong va java slippers", "dong java java slippery", "dong java java grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code 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: (((("dong java java slippers") or ("quang hung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong java java slippers") OR ("quang hung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong java java slippers ) or ( quang hung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong java java slippers") or ("quang hung code snippets"))) or ("locating bug code snippets"))*.