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