Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"dung can chan snippets" » "dung cac chan snippets", "dung san chan snippets", "dung van chan snippets", "dung dan chan snippets", "dung cam chan snippets", "dung ban chan snippets"
"locating bug code snippets" » "locating bug core 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: (((("dung can chan snippets") or ("using java code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung can chan snippets") OR ("using java code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung can chan snippets ) or ( using java code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung can chan snippets") or ("using java code snippets"))) or ("locating bug code snippets"))*.